H2H data updated: 2026-10-08 00:00 UTC

Ethan Quinn vs Shintaro Mochizuki H2H: 0-1

Shintaro Mochizuki holds a 1–0 lead over Ethan Quinn in their ATP head-to-head. Across 1 main-draw meeting, Shintaro Mochizuki leads 1–0 on grass. Most recently, Shintaro Mochizuki won the 2026 Wimbledon second round 6-2 7-6(6) 7-5.

United States Age 22 Right-Handed 191 cm / 6'3"
H2H
0 – 1
1 main-draw meetings
Japan Age 23 Right-Handed 175 cm / 5'9"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Shintaro Mochizuki #151 6-2 7-6(6) 7-5 Ethan Quinn #47 Match data Jul 1, 2026 R64 Wimbledon Grand Slam Grass

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
Ethan Quinn #66 #45 1,021 1,771 26 39 40.0% 0 0 0 0 0 0
Shintaro Mochizuki #123 #92 680 1,705 10 27 27.0% 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 Ethan Quinn Shintaro Mochizuki
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 — — — — — — — 2021 0–2 0.0% #387 1,510 0 0
19 2023 1–3 25.0% #344 1,494 0 0 2022 0–3 0.0% #319 1,513 0 0
20 2024 1–3 25.0% #202 1,467 0 0 2023 3–4 42.9% #137 1,596 0 0
21 2025 12–18 40.0% #70 1,716 0 0 2024 0–7 0.0% #235 1,572 0 0
22 2026 12–15 44.4% #66 1,737 0 0 2025 4–5 44.4% #99 1,681 0 0
23 — — — — — — — 2026 3–6 33.3% #123 1,656 0 0

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 Ethan Quinn Shintaro Mochizuki
Yr HardClayGrass Yr HardClayGrass
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
18 — — — — — — — — — — — — — 2021 0 2 2 0.0% — — — — — — — —
19 2023 0 2 2 0.0% — — — — 1 1 2 50.0% 2022 0 3 3 0.0% — — — — — — — —
20 2024 0 2 2 0.0% — — — — 1 1 2 50.0% 2023 3 2 5 60.0% — — — — 0 2 2 0.0%
21 2025 6 12 18 33.3% 4 4 8 50.0% 2 2 4 50.0% 2024 0 5 5 0.0% 0 1 1 0.0% 0 1 1 0.0%
22 2026 5 6 11 45.5% 1 6 7 14.3% 6 3 9 66.7% 2025 3 4 7 42.9% — — — — 1 1 2 50.0%
23 — — — — — — — — — — — — — 2026 0 5 5 0.0% — — — — 3 1 4 75.0%
Career — 11 22 33 33.3% 5 10 15 33.3% 10 7 17 58.8% — 6 21 27 22.2% 0 1 1 0.0% 4 5 9 44.4%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. 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 Ethan Quinn Shintaro Mochizuki
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%
18 — —/— — — — — — — — — — 2021 2/2 0.5 3.5 60.6% 48.8% 27.6% 38.9% 40.0% 41.1% 40.7%
19 2023 4/4 5.5 2.3 61.4% 70.8% 45.0% 62.5% 42.5% 60.9% 38.5% 2022 3/3 1.0 4.3 54.2% 61.2% 44.3% 54.2% 34.9% 53.3% 33.1%
20 2024 4/4 4.5 2.8 62.0% 70.6% 42.8% 67.9% 20.6% 59.8% 34.6% 2023 7/7 3.9 2.9 61.3% 66.0% 47.4% 49.1% 30.8% 58.9% 32.6%
21 2025 30/30 6.6 3.2 61.9% 69.9% 49.5% 59.3% 35.9% 62.2% 33.9% 2024 7/7 3.0 4.1 50.2% 68.1% 45.8% 55.5% 23.7% 57.0% 33.9%
22 2026 27/27 7.7 3.5 65.7% 75.0% 46.1% 46.6% 32.4% 65.7% 34.1% 2025 9/9 5.1 4.4 50.4% 71.6% 47.3% 49.7% 39.6% 59.3% 38.0%
23 — —/— — — — — — — — — — 2026 9/9 3.2 4.0 51.7% 66.1% 46.3% 60.0% 35.7% 56.7% 38.9%
Career — 65/65 6.9 3.2 63.5% 72.1% 47.4% 54.8% 33.9% 63.4% 34.3% — 37/37 3.4 3.9 53.6% 66.5% 45.5% 53.0% 33.6% 56.7% 36.2%

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 Ethan Quinn Shintaro Mochizuki
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
18 2022 1508 99.2 — — — — — — — — — — — — — 2021 1510 95.1 -3.15 +0.84 0.691 41.1% — — — 0.0% -3.50 — — — +0.19
19 2023 1494 102.9 -0.81 -0.90 0.984 49.7% — — — 22.2% -1.00 — 0–1 — +0.41 2022 1513 110.5 -1.22 -0.83 0.708 42.8% +3 — — 14.3% -2.28 0–1 — — -0.04
20 2024 1468 108.5 -3.54 -0.68 0.860 47.1% — — — 30.0% -0.40 1–1 0–3 (0%) — +0.50 2023 1596 112.6 -1.61 -0.31 0.793 45.9% -15 — — 38.9% -1.44 2–1 (67%) 3–0 (100%) — -0.01
21 2025 1716 129.3 -1.66 -1.51 0.896 48.0% -47 -19 -56 38.9% -0.68 3–2 (60%) 6–7 (46%) 101.5 +0.18 2024 1572 111.9 -3.53 -0.36 0.789 45.3% -12 — — 11.1% -2.28 0–1 0–4 (0%) — -0.17
22 2026 1737 133.1 +0.41 -0.06 0.994 50.0% -15 -100 -13 45.5% -0.11 3–3 (50%) 5–12 (29%) 96.1 -0.20 2025 1681 121.4 -2.48 +1.45 0.934 49.0% -66 — — 50.0% -0.39 1–3 (25%) 1–1 — -0.21
23 — — — — — — — — — — — — — — — — 2026 1656 117.6 -2.97 +3.43 0.897 48.2% -78 — +154 40.7% -0.70 0–1 2–1 (67%) — -0.30
Career — 1771 128.3 -0.86 -0.82 0.937 48.9% -35 -57 -26 40.1% -0.44 7–6 (54%) 11–23 (32%) 96.2 +1.37 — 1706 117.4 -2.57 +1.04 0.835 46.6% -39 — +154 34.3% -1.24 3–7 (30%) 6–6 (50%) 97.8 -1.46

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.