H2H data updated: 2026-09-13 00:00 UTC

Danielle Collins vs Monica Niculescu H2H: 1-0

Danielle Collins holds a 1–0 lead over Monica Niculescu in their WTA head-to-head. Across 1 main-draw meeting, Danielle Collins leads 1–0 on clay. Most recently, Danielle Collins won the 2020 Roland Garros first round 2-6 6-2 6-1.

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Danielle Collins
United States Age 32 Right-Handed 178 cm / 5'10"
H2H
1 – 0
1 main-draw meetings
Monica Niculescu
Romania Age 38 Right-Handed 168 cm / 5'6"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Danielle Collins #57 2-6 6-2 6-1 Monica Niculescu #141 Match data Sep 29, 2020* R128 Roland Garros Grand Slam Clay

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
Danielle Collins #343 #7 3,702 2,073 174 118 59.6% 0 1 0 2 1 4
Monica Niculescu #958 #28 1,960 1,779 179 214 45.5% 0 0 0 0 3 3

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 Danielle Collins Monica Niculescu
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 — — — — — — — 2007 0–1 0.0% #152 1,490 0 0
20 2014 0–1 0.0% #915 1,498 0 0 2008 8–15 34.8% #48 1,543 0 0
21 — — — — — — — 2009 10–22 31.2% #103 1,522 0 0
22 2016 0–1 0.0% #259 1,492 0 0 2010 6–9 40.0% #82 1,574 0 0
23 2017 0–1 0.0% #177 1,484 0 0 2011 21–15 58.3% #30 1,757 0 0
24 2018 18–17 51.4% #36 1,659 0 0 2012 15–23 39.5% #58 1,639 0 0
25 2019 18–18 50.0% #29 1,717 0 0 2013 22–21 51.2% #59 1,635 0 1
26 2020 10–6 62.5% #45 1,812 0 0 2014 22–19 53.7% #46 1,688 0 2
27 2021 37–15 71.2% #29 1,891 0 2 2015 20–21 48.8% #39 1,676 0 2
28 2022 20–11 64.5% #14 1,898 0 2 2016 26–19 57.8% #38 1,758 0 3
29 2023 18–18 50.0% #52 1,854 0 2 2017 12–19 38.7% #77 1,622 0 3
30 2024 38–16 70.4% #11 1,950 0 4 2018 9–15 37.5% #99 1,591 0 3
31 2025 15–14 51.7% #64 1,859 0 4 2019 8–10 44.4% #118 1,638 0 3
32 — — — — — — — 2020 0–2 0.0% #144 1,586 0 3
33 — — — — — — — 2021 0–3 0.0% #274 1,519 0 3

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 Danielle Collins Monica Niculescu
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 %
19 — — — — — — — — — — — — — — — — — 2007 0 1 1 0.0% — — — — — — — — — — — —
20 2014 0 1 1 0.0% — — — — — — — — — — — — 2008 6 10 16 37.5% 1 3 4 25.0% 1 2 3 33.3% — — — —
21 — — — — — — — — — — — — — — — — — 2009 6 13 19 31.6% 3 6 9 33.3% 0 2 2 0.0% 1 1 2 50.0%
22 2016 0 1 1 0.0% — — — — — — — — — — — — 2010 4 7 11 36.4% 1 1 2 50.0% 1 1 2 50.0% — — — —
23 2017 0 1 1 0.0% — — — — — — — — — — — — 2011 17 9 26 65.4% 3 4 7 42.9% 1 2 3 33.3% — — — —
24 2018 14 10 24 58.3% 2 4 6 33.3% 2 3 5 40.0% — — — — 2012 12 15 27 44.4% 1 5 6 16.7% 1 2 3 33.3% 1 1 2 50.0%
25 2019 10 11 21 47.6% 6 5 11 54.5% 2 2 4 50.0% — — — — 2013 20 14 34 58.8% 2 4 6 33.3% 0 2 2 0.0% 0 1 1 0.0%
26 2020 6 5 11 54.5% 4 1 5 80.0% — — — — — — — — 2014 18 14 32 56.3% 4 4 8 50.0% 0 1 1 0.0% — — — —
27 2021 25 11 36 69.4% 11 3 14 78.6% 1 1 2 50.0% — — — — 2015 10 14 24 41.7% 3 3 6 50.0% 7 4 11 63.6% — — — —
28 2022 17 6 23 73.9% 3 4 7 42.9% 0 1 1 0.0% — — — — 2016 23 13 36 63.9% 2 5 7 28.6% 1 1 2 50.0% — — — —
29 2023 17 15 32 53.1% 0 2 2 0.0% 1 1 2 50.0% — — — — 2017 11 13 24 45.8% 0 4 4 0.0% 1 2 3 33.3% — — — —
30 2024 16 10 26 61.5% 19 5 24 79.2% 3 1 4 75.0% — — — — 2018 9 14 23 39.1% — — — — 0 1 1 0.0% — — — —
31 2025 6 8 14 42.9% 7 4 11 63.6% 2 2 4 50.0% — — — — 2019 7 8 15 46.7% — — — — 1 2 3 33.3% — — — —
32 — — — — — — — — — — — — — — — — — 2020 0 1 1 0.0% 0 1 1 0.0% — — — — — — — —
33 — — — — — — — — — — — — — — — — — 2021 0 2 2 0.0% — — — — 0 1 1 0.0% — — — —
Career — 111 79 190 58.4% 52 28 80 65.0% 11 11 22 50.0% — — — — — 143 148 291 49.1% 20 40 60 33.3% 14 23 37 37.8% 2 3 5 40.0%

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 279/293 of Danielle Collins's and 341/394 of Monica Niculescu'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 Danielle Collins Monica Niculescu
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%
19 — —/— — — — — — — — — — 2007 1/1 0.0 4.0 57.4% 45.2% 34.8% 25.0% 100.0% 40.7% 30.8%
20 2014 1/1 2.0 0.0 59.0% 63.3% 52.9% 64.3% 20.0% 59.0% 32.3% 2008 19/23 1.3 1.9 72.5% 54.5% 38.0% 41.9% 45.0% 49.9% 43.0%
21 — —/— — — — — — — — — — 2009 30/32 1.0 1.4 71.6% 55.9% 46.3% 44.0% 48.4% 52.8% 43.8%
22 2016 1/1 0.0 3.0 55.3% 26.9% 42.9% 30.0% 50.0% 34.0% 36.6% 2010 12/15 0.3 1.0 73.4% 53.0% 39.4% 47.7% 45.0% 49.3% 43.9%
23 2017 1/1 1.0 1.0 56.3% 37.0% 33.3% 25.0% 33.3% 35.4% 40.0% 2011 29/36 0.7 1.5 74.9% 55.3% 46.1% 44.2% 60.9% 52.3% 48.8%
24 2018 30/35 2.4 3.2 58.0% 60.3% 46.2% 47.0% 47.7% 54.1% 41.8% 2012 33/38 1.3 1.1 67.1% 58.0% 47.7% 51.8% 46.0% 54.3% 43.3%
25 2019 35/36 3.2 3.1 59.4% 62.0% 47.0% 51.0% 52.5% 56.2% 41.8% 2013 37/43 0.8 1.5 74.6% 59.2% 45.9% 47.0% 52.2% 55.3% 49.4%
26 2020 16/16 3.5 3.5 58.9% 71.1% 48.3% 61.6% 48.3% 61.3% 43.8% 2014 34/41 1.2 3.1 70.2% 60.8% 41.3% 50.8% 59.1% 55.0% 51.0%
27 2021 52/52 3.6 3.9 54.6% 70.3% 48.5% 54.9% 54.3% 60.2% 46.1% 2015 32/41 1.1 2.8 70.4% 60.4% 46.2% 47.8% 43.9% 55.9% 43.1%
28 2022 31/31 3.8 6.1 54.1% 69.6% 48.1% 57.9% 52.5% 59.6% 45.1% 2016 41/46 1.3 1.9 71.6% 57.0% 43.8% 43.2% 51.4% 53.4% 50.0%
29 2023 36/36 3.6 4.6 59.0% 67.2% 47.2% 55.1% 48.1% 58.8% 42.2% 2017 27/31 0.4 1.2 82.8% 52.1% 47.0% 51.7% 49.9% 51.2% 44.9%
30 2024 50/54 3.8 4.8 56.5% 71.1% 47.4% 58.9% 52.9% 60.8% 45.4% 2018 23/24 0.3 1.5 77.6% 55.6% 46.3% 46.4% 51.8% 53.0% 47.4%
31 2025 26/30 4.2 5.2 57.9% 66.1% 49.5% 55.1% 51.5% 58.8% 41.9% 2019 18/18 0.4 1.5 79.1% 56.5% 45.6% 37.0% 46.4% 54.6% 46.2%
32 — —/— — — — — — — — — — 2020 2/2 1.0 1.5 79.6% 49.7% 35.3% 49.4% 42.2% 46.7% 40.2%
33 — —/— — — — — — — — — — 2021 3/3 0.3 1.3 74.9% 47.5% 49.1% 46.0% 50.0% 46.5% 36.7%
Career — 279/293 3.5 4.3 57.0% 67.2% 47.7% 54.9% 51.3% 58.7% 43.7% — 341/394 0.9 1.8 73.4% 56.9% 44.8% 46.4% 50.7% 53.3% 46.5%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 Danielle Collins Monica Niculescu
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
19 — — — — — — — — — — — — — — — — 2007 1491 98.2 -0.35 +1.13 0.519 36.6% — — — 0.0% -4.50 — — — +0.05
20 2014 1498 107.7 +4.54 +2.42 0.787 44.9% — — — 33.3% -2.67 0–1 1–0 — -0.24 2008 1543 120.1 -2.90 -0.19 0.859 46.3% +10 -13 +47 34.6% -1.12 4–6 (40%) 1–2 (33%) 99.8 +0.05
21 — — — — — — — — — — — — — — — — 2009 1523 112.7 -2.66 -0.26 0.928 48.0% +26 -22 — 34.7% -1.10 3–7 (30%) 2–1 (67%) — +0.79
22 2016 1492 98.2 -2.62 -4.63 0.555 35.2% — — — 0.0% -4.50 — — — +0.13 2010 1574 117.8 -2.83 +0.34 0.866 46.8% -1 — — 41.7% -0.81 3–3 (50%) 1–2 (33%) 101.0 -0.32
23 2017 1484 100.8 -2.48 +1.44 0.619 37.6% — — — 0.0% -5.00 — — — -0.14 2011 1758 133.3 -2.06 +3.84 1.021 50.5% -10 -238 -215 53.8% +0.41 7–3 (70%) 3–5 (38%) 103.5 +0.37
24 2018 1659 126.6 -1.48 -1.03 0.910 48.1% +14 -93 -38 46.8% -0.30 9–4 (69%) 2–2 (50%) 106.1 +0.97 2012 1640 125.0 -1.30 -0.32 0.949 48.8% +48 -164 -85 42.4% -0.47 3–8 (27%) 6–1 (86%) 96.9 +0.44
25 2019 1717 138.4 -0.18 -0.13 0.953 49.3% -18 -87 -80 51.3% -0.12 5–7 (42%) 6–4 (60%) 101.1 -1.21 2013 1635 132.6 -0.55 +4.14 1.104 52.3% +66 -181 — 52.1% +0.24 6–8 (43%) 4–2 (67%) 97.6 -0.53
26 2020 1813 147.3 +3.14 +1.35 1.131 52.7% -60 -109 — 60.0% +0.85 4–4 (50%) 0–1 — -1.27 2014 1688 140.2 -1.17 +5.03 1.133 53.0% +7 -148 — 57.1% +1.03 8–12 (40%) 2–6 (25%) 93.9 -0.85
27 2021 1891 152.7 +3.13 +2.70 1.158 53.3% +4 -43 — 71.3% +1.40 9–5 (64%) 7–3 (70%) 107.5 +0.72 2015 1677 131.5 -1.57 +1.81 0.978 49.6% -20 -106 -62 50.0% +0.03 10–10 (50%) 4–0 (100%) 105.1 -0.95
28 2022 1898 149.2 +2.47 +2.92 1.117 52.3% +79 -119 — 66.2% +0.81 3–5 (38%) 6–3 (67%) 99.8 +0.10 2016 1759 135.4 -1.87 +5.53 1.073 51.7% +23 -229 — 56.0% +0.42 8–6 (57%) 1–4 (20%) 100.6 +0.22
29 2023 1855 153.7 +2.52 +1.03 1.025 50.4% +53 — — 53.6% +0.20 5–9 (36%) 5–7 (42%) 91.8 -2.00 2017 1622 118.4 -3.66 +1.26 0.920 48.1% +24 -137 -27 40.9% -0.64 5–5 (50%) 3–2 (60%) 100.1 +0.21
30 2024 1951 160.8 +3.69 +3.10 1.157 53.2% -11 +71 -239 68.1% +1.30 9–7 (56%) 7–1 (88%) 104.9 -1.22 2018 1591 133.1 -2.27 +2.61 1.010 50.2% +6 — — 39.6% -0.48 3–5 (38%) 1–2 (33%) — -0.38
31 2025 1860 143.1 +1.81 -0.05 1.019 50.4% -7 +142 -159 50.7% +0.09 5–4 (56%) 4–3 (57%) 100.4 -0.97 2019 1638 129.0 -1.03 +1.89 1.019 50.3% +11 — -43 46.2% -0.05 3–4 (43%) 2–5 (29%) 98.8 -0.23
32 — — — — — — — — — — — — — — — — 2020 1587 99.7 -1.05 +1.06 0.754 43.7% — — — 33.3% -2.34 0–2 — — -0.11
33 — — — — — — — — — — — — — — — — 2021 1519 98.6 -2.42 -0.40 0.685 41.9% — — — 0.0% -3.17 — — — -0.37
35 — — — — — — — — — — — — — — — — 2023 1531 101.7 — — — — — — — — — — — — —
Career — 2074 154.6 +2.01 +1.46 1.057 51.3% +14 -3 -124 59.0% +0.55 49–46 (52%) 38–24 (61%) 107.7 -1.76 — 1780 134.0 -1.87 +2.44 0.996 49.9% +19 -140 -64 46.8% -0.13 63–79 (44%) 30–32 (48%) 97.9 -0.41

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.