H2H data updated: 2026-07-18 14:16 UTC

John Isner vs Ivo Karlovic H2H: 2-3

Ivo Karlovic holds a 3–2 lead over John Isner in their ATP head-to-head. Across 5 main-draw meetings, Ivo Karlovic leads 2–1 on hard courts and 1–0 on clay. Most recently, Ivo Karlovic won the 2014 Acapulco third round 7-6(4) 7-6(5).

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John Isner
USA Age 41 Right-Handed 208 cm / 6'10"
H2H
2 – 3
5 main draw meetings
Ivo Karlovic
CRO Age 47 Right-Handed 211 cm / 6'11"

H2H Match Log

DateTournamentCategoryRoundSurfaceWinnerScoreLoserMatch
Feb 26, 2014* Acapulco ATP 500 R32 Hard Ivo Karlovic #55 7-6(4) 7-6(5) John Isner #13 Match data
Jul 13, 2013* Newport ATP 250 QF Grass John Isner #19 7-6(3) 7-6(3) Ivo Karlovic #167 Match data
Apr 9, 2011* Houston ATP 250 QF Clay Ivo Karlovic #174 7-6(2) 6-7(2) 7-6(9) John Isner #29 Match data
Feb 20, 2010* Memphis ATP 250 QF Hard John Isner #25 6-1 7-6(7) Ivo Karlovic #33 Match data
Aug 20, 2008* New Haven ATP 250 R32 Hard Ivo Karlovic #14 6-7(4) 6-3 6-4 John Isner #124 Match data

* Estimated match date where the exact historical date is unavailable.

Career Comparison

Player Current Peak Pts Elo W L Win % GS 1000 Finals 500 250 Titles
John Isner #660 #8 3,720 2,053 467 293 61.4% 0 1 0 0 15 16
Ivo Karlovic #1,066 #14 2,295 1,998 357 333 51.7% 0 0 0 0 8 8

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 John Isner Ivo Karlovic
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
22 2007 8–5 61.5% #106 1,656 0 0 2001 0–1 0.0% #193 1,500 0 0
23 2008 11–19 36.7% #144 1,608 0 0 2002 1–2 33.3% #201 1,454 0 0
24 2009 27–18 60.0% #34 1,828 0 0 2003 9–7 56.2% #73 1,666 0 0
25 2010 38–20 65.5% #19 1,882 0 1 2004 16–24 40.0% #61 1,667 0 0
26 2011 34–19 64.2% #18 2,021 0 3 2005 17–22 43.6% #70 1,739 0 0
27 2012 38–18 67.9% #14 1,965 0 5 2006 16–18 47.1% #98 1,632 0 0
28 2013 38–22 63.3% #14 1,983 0 7 2007 45–21 68.2% #22 1,940 0 3
29 2014 37–21 63.8% #19 1,922 0 9 2008 29–25 53.7% #26 1,815 0 4
30 2015 45–23 66.2% #11 2,026 0 10 2009 21–22 48.8% #37 1,795 0 4
31 2016 30–20 60.0% #19 2,019 0 10 2010 16–9 64.0% #73 1,864 0 4
32 2017 36–21 63.2% #17 1,984 0 12 2011 16–20 44.4% #56 1,819 0 4
33 2018 32–22 59.3% #10 1,956 0 14 2012 14–16 46.7% #100 1,768 0 4
34 2019 29–17 63.0% #19 1,921 0 15 2013 15–13 53.6% #78 1,772 0 5
35 2020 10–7 58.8% #25 1,845 0 15 2014 32–27 54.2% #27 1,853 0 5
36 2021 23–11 67.6% #24 1,933 0 16 2015 38–25 60.3% #23 1,916 0 6
37 2022 22–16 57.9% #41 1,891 0 16 2016 32–22 59.3% #20 1,970 0 8
38 2023 9–14 39.1% #172 1,698 0 16 2017 15–20 42.9% #80 1,770 0 8
39 — — — — — — — 2018 11–16 40.7% #100 1,644 0 8
40 — — — — — — — 2019 11–15 42.3% #95 1,668 0 8
41 — — — — — — — 2020 1–4 20.0% #147 1,615 0 8
42 — — — — — — — 2021 2–4 33.3% #279 1,623 0 8