H2H data updated: 2026-09-01 00:00 UTC

Ivo Karlovic vs Donald Young H2H: 2-2

Ivo Karlovic and Donald Young are tied 2–2 in their ATP head-to-head. Across 4 main-draw meetings, they are tied 2–2 on hard courts. Most recently, Donald Young won the 2018 Atlanta round of 32 2-6 7-6(5) 7-6(6).

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Ivo Karlovic
CRO Age 47 Right-Handed 211 cm / 6'11"
H2H
2 – 2
4 main draw meetings
Donald Young
USA Age 37 Left-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Donald Young #230 2-6 7-6(5) 7-6(6) Ivo Karlovic #117 Match data Jul 26, 2018* R32 Atlanta ATP 250 Hard
Donald Young #69 7-6(5) 7-6(3) Ivo Karlovic #20 Match data Feb 23, 2017* R32 Delray Beach Open ATP 250 Hard
Ivo Karlovic #23 6-4 7-6(4) 6-4 Donald Young #56 Match data Sep 1, 2016* R64 US Open Grand Slam Hard
Ivo Karlovic #29 6-3 6-3 Donald Young #56 Match data Feb 22, 2015* F Delray Beach Open ATP 250 Hard
Ivo Karlovic #174 6-4 6-4 Donald Young #120 Match data Apr 5, 2011* Q3 Q U.S. Men's Clay Court Championship ATP 250 Clay

1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.

Career Comparison

Player Current Peak Pts Elo W L Win % GS 1000 including documented historical predecessor categories Finals 500 including documented historical predecessor categories 250 including documented historical predecessor categories Titles
Ivo Karlovic #1,066 #14 2,295 1,999 363 335 52.0% 0 0 0 0 8 8
Donald Young #1,350 #38 1,039 1,932 125 188 39.9% 0 0 0 0 0 0

Career Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.

Age Ivo Karlovic Donald Young
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 — — — — — — — 2005 0–7 0.0% #553 1,402 0 0
16 — — — — — — — 2006 0–3 0.0% #494 1,380 0 0
17 — — — — — — — 2007 3–3 50.0% #100 1,423 0 0
18 — — — — — — — 2008 8–20 28.6% #138 1,485 0 0
19 — — — — — — — 2009 0–4 0.0% #194 1,522 0 0
20 — — — — — — — 2010 3–6 33.3% #127 1,555 0 0
21 — — — — — — — 2011 19–17 52.8% #39 1,800 0 0
22 2001 0–1 0.0% #193 1,500 0 0 2012 5–24 17.2% #190 1,587 0 0
23 2002 1–2 33.3% #201 1,454 0 0 2013 2–3 40.0% #96 1,696 0 0
24 2003 9–7 56.2% #73 1,665 0 0 2014 18–21 46.2% #57 1,759 0 0
25 2004 18–25 41.9% #61 1,685 0 0 2015 21–22 48.8% #48 1,828 0 0
26 2005 17–22 43.6% #70 1,745 0 0 2016 18–21 46.2% #88 1,800 0 0
27 2006 16–18 47.1% #98 1,633 0 0 2017 25–22 53.2% #61 1,786 0 0
28 2007 45–21 68.2% #22 1,931 0 3 2018 3–12 20.0% #248 1,727 0 0
29 2008 29–25 53.7% #26 1,814 0 4 2019 0–2 0.0% #230 1,648 0 0
30 2009 21–22 48.8% #37 1,797 0 4 — — — — — — —
31 2010 16–9 64.0% #73 1,866 0 4 2021 0–1 0.0% #411 1,604 0 0
32 2011 16–20 44.4% #56 1,821 0 4 — — — — — — —
33 2012 14–16 46.7% #100 1,769 0 4 — — — — — — —
34 2013 15–13 53.6% #78 1,774 0 5 — — — — — — —
35 2014 36–28 56.2% #27 1,856 0 5 — — — — — — —
36 2015 38–25 60.3% #23 1,917 0 6 — — — — — — —
37 2016 32–22 59.3% #20 1,972 0 8 — — — — — — —
38 2017 15–20 42.9% #80 1,771 0 8 — — — — — — —
39 2018 11–16 40.7% #100 1,645 0 8 — — — — — — —
40 2019 11–15 42.3% #95 1,675 0 8 — — — — — — —
41 2020 1–4 20.0% #147 1,620 0 8 — — — — — — —
42 2021 2–4 33.3% #279 1,625 0 8 — — — — — — —

Surface Results by Age

Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.

Age Ivo Karlovic Donald Young
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
15 — — — — — — — — — — — — — — — — — 2005 0 6 6 0.0% 0 1 1 0.0% — — — — — — — —
16 — — — — — — — — — — — — — — — — — 2006 0 3 3 0.0% — — — — — — — — — — — —
17 — — — — — — — — — — — — — — — — — 2007 3 3 6 50.0% — — — — — — — — — — — —
18 — — — — — — — — — — — — — — — — — 2008 6 14 20 30.0% 1 3 4 25.0% 1 3 4 25.0% — — — —
19 — — — — — — — — — — — — — — — — — 2009 0 4 4 0.0% — — — — — — — — — — — —
20 — — — — — — — — — — — — — — — — — 2010 3 5 8 37.5% 0 1 1 0.0% — — — — — — — —
21 — — — — — — — — — — — — — — — — — 2011 16 13 29 55.2% — — — — 3 4 7 42.9% — — — —
22 2001 0 1 1 0.0% — — — — — — — — — — — — 2012 5 14 19 26.3% 0 6 6 0.0% 0 4 4 0.0% — — — —
23 2002 1 1 2 50.0% — — — — 0 1 1 0.0% — — — — 2013 2 3 5 40.0% — — — — — — — — — — — —
24 2003 5 4 9 55.6% 1 1 2 50.0% 3 2 5 60.0% — — — — 2014 13 16 29 44.8% 4 2 6 66.7% 1 3 4 25.0% — — — —
25 2004 6 12 18 33.3% 5 7 12 41.7% 5 3 8 62.5% 2 3 5 40.0% 2015 21 15 36 58.3% 0 4 4 0.0% 0 3 3 0.0% — — — —
26 2005 9 11 20 45.0% 0 6 6 0.0% 7 3 10 70.0% 1 2 3 33.3% 2016 11 15 26 42.3% 2 3 5 40.0% 5 3 8 62.5% — — — —
27 2006 8 11 19 42.1% 6 4 10 60.0% 0 2 2 0.0% 2 1 3 66.7% 2017 20 15 35 57.1% 0 4 4 0.0% 5 3 8 62.5% — — — —
28 2007 30 16 46 65.2% 6 2 8 75.0% 8 2 10 80.0% 1 1 2 50.0% 2018 3 10 13 23.1% 0 1 1 0.0% 0 1 1 0.0% — — — —
29 2008 17 14 31 54.8% 5 8 13 38.5% 7 2 9 77.8% 0 1 1 0.0% 2019 0 2 2 0.0% — — — — — — — — — — — —
30 2009 9 15 24 37.5% 5 5 10 50.0% 7 2 9 77.8% — — — — — — — — — — — — — — — — — — — — —
31 2010 14 7 21 66.7% 2 2 4 50.0% — — — — — — — — 2021 0 1 1 0.0% — — — — — — — — — — — —
32 2011 12 13 25 48.0% 3 4 7 42.9% 1 3 4 25.0% — — — — — — — — — — — — — — — — — — — — —
33 2012 12 11 23 52.2% 0 3 3 0.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — —
34 2013 13 11 24 54.2% 0 1 1 0.0% 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — —
35 2014 24 18 42 57.1% 7 6 13 53.8% 5 4 9 55.6% — — — — — — — — — — — — — — — — — — — — —
36 2015 26 18 44 59.1% 1 3 4 25.0% 11 4 15 73.3% — — — — — — — — — — — — — — — — — — — — —
37 2016 20 13 33 60.6% 4 6 10 40.0% 8 3 11 72.7% — — — — — — — — — — — — — — — — — — — — —
38 2017 8 12 20 40.0% 3 4 7 42.9% 4 4 8 50.0% — — — — — — — — — — — — — — — — — — — — —
39 2018 4 7 11 36.4% 5 6 11 45.5% 2 3 5 40.0% — — — — — — — — — — — — — — — — — — — — —
40 2019 9 11 20 45.0% 1 2 3 33.3% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
41 2020 1 4 5 20.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
42 2021 1 3 4 25.0% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
Career — 229 213 442 51.8% 54 70 124 43.5% 74 44 118 62.7% 6 8 14 42.9% — 103 139 242 42.6% 7 25 32 21.9% 15 24 39 38.5% — — — —

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 692/698 of Ivo Karlovic's and 310/313 of Donald Young's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.

Age Ivo Karlovic Donald Young
Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts% Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts%
15 — —/— — — — — — — — — — 2005 7/7 2.0 2.6 61.8% 55.4% 43.7% 41.0% 38.9% 50.9% 32.9%
16 — —/— — — — — — — — — — 2006 3/3 1.3 4.3 54.6% 47.1% 35.8% 15.7% 4.2% 41.9% 32.0%
17 — —/— — — — — — — — — — 2007 5/6 5.2 4.4 56.0% 75.2% 48.1% 63.4% 33.9% 63.1% 37.1%
18 — —/— — — — — — — — — — 2008 28/28 3.1 3.4 59.1% 66.0% 48.4% 61.2% 38.5% 58.9% 34.4%
19 — —/— — — — — — — — — — 2009 4/4 3.5 3.3 54.8% 66.6% 47.1% 54.6% 38.1% 56.1% 31.9%
20 — —/— — — — — — — — — — 2010 9/9 3.7 4.0 59.6% 67.5% 46.6% 53.3% 56.3% 59.1% 36.1%
21 — —/— — — — — — — — — — 2011 36/36 2.8 3.4 63.9% 67.3% 52.8% 54.0% 44.8% 61.9% 38.8%
22 2001 1/1 16.0 2.0 76.6% 71.4% 46.7% 60.0% 50.0% 65.6% 32.4% 2012 28/29 2.1 4.1 60.4% 63.8% 41.9% 52.3% 35.2% 54.9% 37.0%
23 2002 2/3 15.0 8.5 53.7% 75.3% 40.4% 71.7% 75.0% 59.2% 28.6% 2013 5/5 2.6 4.4 64.6% 62.3% 53.6% 60.7% 48.4% 57.6% 48.2%
24 2003 16/16 17.6 6.3 61.1% 83.8% 53.3% 73.0% 28.3% 71.9% 29.0% 2014 39/39 3.1 3.7 62.4% 69.1% 50.6% 52.6% 38.9% 62.2% 38.0%
25 2004 40/43 21.1 5.4 61.9% 81.6% 52.8% 63.7% 25.9% 70.3% 26.8% 2015 43/43 3.6 4.5 55.4% 69.5% 50.3% 49.7% 38.9% 61.1% 36.9%
26 2005 39/39 18.7 4.4 63.3% 82.0% 51.5% 69.3% 31.9% 70.9% 25.5% 2016 39/39 3.6 3.7 57.6% 70.7% 51.0% 60.9% 40.9% 62.7% 37.1%
27 2006 34/34 18.3 3.1 65.0% 82.0% 50.3% 70.9% 34.6% 70.7% 28.1% 2017 46/47 4.2 4.0 60.9% 69.1% 50.0% 58.3% 45.0% 61.5% 33.4%
28 2007 64/66 20.6 1.9 68.7% 84.3% 54.5% 71.9% 34.1% 74.9% 29.5% 2018 15/15 2.7 4.4 60.3% 63.1% 48.9% 51.9% 43.4% 57.0% 33.3%
29 2008 54/54 17.8 1.8 66.2% 81.4% 53.2% 66.2% 31.8% 71.8% 30.1% 2019 2/2 1.0 2.5 59.3% 54.4% 44.2% 50.0% 17.1% 50.5% 37.2%
30 2009 43/43 20.7 2.3 66.4% 84.9% 54.8% 62.5% 39.2% 74.8% 29.1% — —/— — — — — — — — — —
31 2010 25/25 18.9 2.1 64.2% 83.5% 51.8% 68.0% 27.1% 72.1% 30.3% 2021 1/1 4.0 6.0 58.9% 65.1% 36.7% 50.0% 50.0% 53.4% 29.4%
32 2011 36/36 17.6 2.7 66.4% 80.8% 49.8% 65.5% 37.0% 70.5% 28.4% — —/— — — — — — — — — —
33 2012 30/30 16.9 2.9 64.7% 79.5% 52.3% 61.0% 31.2% 69.7% 30.5% — —/— — — — — — — — — —
34 2013 28/28 17.3 3.4 64.1% 82.1% 55.1% 61.7% 28.7% 72.4% 27.8% — —/— — — — — — — — — —
35 2014 64/64 18.5 2.8 66.3% 82.8% 54.0% 68.7% 34.9% 73.2% 27.5% — —/— — — — — — — — — —
36 2015 63/63 23.0 3.6 66.4% 84.9% 57.0% 73.1% 33.3% 75.5% 29.0% — —/— — — — — — — — — —
37 2016 54/54 20.9 5.2 63.8% 81.7% 56.4% 72.1% 35.7% 72.6% 26.9% — —/— — — — — — — — — —
38 2017 35/35 20.8 5.1 65.1% 81.8% 56.2% 67.0% 29.2% 72.7% 25.9% — —/— — — — — — — — — —
39 2018 27/27 23.5 5.9 65.1% 83.9% 54.4% 71.8% 28.8% 73.4% 25.9% — —/— — — — — — — — — —
40 2019 26/26 23.7 4.3 65.0% 83.3% 54.3% 72.4% 24.8% 73.2% 25.6% — —/— — — — — — — — — —
41 2020 5/5 13.4 3.6 66.8% 75.6% 56.8% 71.8% 21.3% 69.5% 24.7% — —/— — — — — — — — — —
42 2021 6/6 18.2 5.2 64.8% 79.3% 46.0% 44.2% 29.2% 67.6% 27.1% — —/— — — — — — — — — —
Career — 692/698 19.8 3.5 65.3% 82.6% 53.8% 68.2% 32.4% 72.6% 28.1% — 310/313 3.2 3.9 59.8% 67.4% 49.2% 54.7% 40.7% 60.0% 36.3%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.

Age Ivo Karlovic Donald Young
Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule
14 — — — — — — — — — — — — — — — — 2004 1483 94.3 — — — — — — — — — — — — —
15 — — — — — — — — — — — — — — — — 2005 1402 94.5 -5.39 -2.99 0.671 41.9% +21 — — 0.0% -3.27 — 0–2 — +0.58
16 — — — — — — — — — — — — — — — — 2006 1381 91.8 -3.44 -2.20 0.550 36.6% +7 — — 12.5% -4.00 — — — +0.11
17 — — — — — — — — — — — — — — — — 2007 1424 114.0 -0.74 +1.71 1.007 49.9% +6 — — 43.8% -0.06 1–1 0–2 — +0.03
18 — — — — — — — — — — — — — — — — 2008 1486 119.6 -3.47 -1.98 0.836 47.1% +9 -17 +42 33.8% -1.07 3–4 (43%) 2–8 (20%) — +0.92
19 — — — — — — — — — — — — — — — — 2009 1522 111.1 -0.60 -1.54 0.727 44.6% +11 — — 18.2% -2.09 0–1 1–0 — -0.14
20 — — — — — — — — — — — — — — — — 2010 1556 118.9 -1.42 -0.33 0.883 48.4% +27 — — 34.8% -0.78 0–1 0–2 — -0.09
21 2000 1493 98.8 — — — — — — — — — — — — — 2011 1801 137.2 -0.51 +1.10 1.019 50.0% +33 — -239 49.4% -0.15 5–4 (56%) 9–7 (56%) — +2.05
22 2001 1501 100.2 -4.08 -1.53 0.943 47.8% — — — 0.0% -2.00 — 0–1 — +0.14 2012 1588 122.1 -6.32 +0.15 0.820 45.9% +58 -147 -95 27.8% -1.51 4–9 (31%) 5–8 (38%) — +0.45
23 2002 1455 101.0 -0.82 -1.26 0.701 45.7% — — — 42.9% -0.57 0–1 1–1 — -0.01 2013 1696 130.6 -1.46 +1.87 1.137 52.9% +51 — — 30.0% -0.20 — — — -0.08
24 2003 1666 123.8 +5.40 -4.66 1.033 50.5% -35 — +2 54.3% +0.22 2–2 (50%) 9–10 (47%) — -0.07 2014 1760 144.1 -1.19 +1.54 1.003 50.0% -2 -165 -294 46.0% -0.18 6–8 (43%) 8–7 (53%) — +0.24
25 2004 1686 136.3 +5.37 -7.05 0.904 48.9% -54 -121 +84 45.1% -0.31 10–14 (42%) 28–28 (50%) — -0.85 2015 1829 152.7 -2.57 +1.65 0.948 49.2% +46 -252 -393 47.7% -0.19 8–5 (62%) 5–2 (71%) — -0.51
26 2005 1745 141.3 +6.26 -7.68 0.875 48.7% -20 -269 +91 45.4% -0.26 6–7 (46%) 24–22 (52%) — -2.07 2016 1801 143.0 -1.36 +0.89 0.994 50.0% +6 -187 -184 44.7% -0.19 4–5 (44%) 5–7 (42%) — +0.47
27 2006 1633 131.3 +6.13 -7.11 0.960 49.6% +16 -48 — 51.1% +0.03 7–9 (44%) 19–18 (51%) — +0.32 2017 1786 149.2 -1.67 -1.82 0.865 48.1% +15 -212 -63 47.2% -0.47 8–5 (62%) 12–4 (75%) — -0.96
28 2007 1931 150.5 +9.95 -5.32 1.173 51.8% -6 -289 -103 60.5% +0.53 17–8 (68%) 37–30 (55%) — -1.29 2018 1727 131.1 -4.14 -0.47 0.774 45.1% +69 — — 22.2% -1.86 2–2 (50%) 4–5 (44%) — -1.41
29 2008 1815 150.1 +7.57 -4.88 1.069 50.7% +25 -181 +93 53.4% +0.24 7–10 (41%) 26–29 (47%) — +0.70 2019 1649 106.1 -2.97 +1.63 0.752 43.2% — — — 0.0% -3.25 — — — -0.14
30 2009 1798 147.0 +8.98 -4.91 1.158 51.5% -104 -119 +253 51.8% +0.26 4–9 (31%) 14–24 (37%) — 0.00 2020 1629 99.3 — — — — — — — — — — — — —
31 2010 1867 147.8 +6.46 -3.55 1.087 51.1% -26 -171 — 56.7% +0.33 4–0 (100%) 11–9 (55%) — -0.09 2021 1604 96.3 -1.00 +0.69 0.631 43.5% — — — 0.0% -2.50 — — — -0.13
32 2011 1822 147.5 +6.44 -5.95 0.962 49.6% +14 -88 +122 46.5% -0.14 5–5 (50%) 19–19 (50%) — -1.25 2022 1574 93.3 — — — — — — — — — — — — —
33 2012 1769 144.3 +5.38 -4.85 1.007 49.8% +37 -113 +182 48.7% -0.18 2–6 (25%) 17–14 (55%) — -0.59 2023 1533 95.3 — — — — — — — — — — — — —
34 2013 1774 137.0 +5.97 -5.23 1.007 50.0% +27 — +167 51.6% +0.06 6–4 (60%) 17–11 (61%) — +0.66 — — — — — — — — — — — — — — — —
35 2014 1857 153.7 +7.97 -6.74 1.029 49.9% +21 -115 +54 55.0% +0.13 11–8 (58%) 34–31 (52%) — +1.55 — — — — — — — — — — — — — — — —
36 2015 1917 155.1 +10.01 -5.54 1.186 51.7% -35 -231 +136 57.1% +0.52 15–12 (56%) 32–44 (42%) — +3.02 — — — — — — — — — — — — — — — —
37 2016 1973 155.0 +7.27 -7.09 0.983 50.0% -18 -250 +83 56.8% +0.16 12–6 (67%) 41–25 (62%) — +3.08 — — — — — — — — — — — — — — — —
38 2017 1771 141.4 +6.85 -7.48 0.952 49.6% +15 -53 +153 44.9% -0.17 6–5 (55%) 17–24 (41%) — +1.27 — — — — — — — — — — — — — — — —
39 2018 1646 126.4 +5.95 -7.94 0.974 49.6% +41 +26 +201 46.2% -0.10 5–9 (36%) 17–24 (41%) — +0.79 — — — — — — — — — — — — — — — —
40 2019 1675 134.3 +6.12 -7.61 0.954 49.4% +46 -25 +100 49.3% -0.17 2–6 (25%) 20–18 (53%) — +1.01 — — — — — — — — — — — — — — — —
41 2020 1621 114.5 +1.55 -3.38 0.808 46.4% +33 — — 28.6% -1.00 — 1–4 (20%) — -0.32 — — — — — — — — — — — — — — — —
42 2021 1626 114.4 +1.80 -4.17 0.837 47.4% +19 — — 31.3% -0.75 2–1 (67%) 0–3 (0%) — +0.12 — — — — — — — — — — — — — — — —
Career — 2000 150.3 +7.24 -6.06 1.023 50.2% -4 -133 +101 51.7% +0.09 123–122 (50%) 384–389 (50%) 100.0 +0.88 — 1933 139.0 -2.33 +0.16 0.907 48.3% +26 -163 -164 39.9% -0.68 41–45 (48%) 51–54 (49%) 103.1 +0.45

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.