RallyIQ

Game plan

Kevin Anderson v Ethan Quinn

Every number combines what Kevin Anderson does well with what Ethan Quinn allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Kevin Anderson wins, best of 3 56%90%: 29%–80% · best of 5: 57%
Serve points won 66.6% / 65.4% Kevin / Ethan · tour 63.4%
Strengths only, no similarity priors 56%serve 66.6% / 65.4%

Each player's serve and return strength is fitted against every opponent they were charted against, so a record built on weak opponents counts for less. At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers. The result is then nudged by Kevin Anderson's record against Ethan Quinn's tactical lookalikes and in their charted head-to-heads. A game-by-game Markov chain turns point odds into match odds; the 90% range covers the uncertainty in the two strengths, not the nudges. Charted matches lean toward big events, so treat this as a scouting estimate, not a betting line.

Head to head, per 100 shots

CareerKevinEthan
Direction choice+0.05 ±0.10
better than 71%
−0.06 ±0.07
better than 41%
Shot selection+0.16 ±0.17
better than 70%
±0.00 ±0.19
better than 53%
Execution−0.37 ±0.61
better than 51%
−2.26 ±0.66
better than 1%
Points left on the table2.35 ±0.13
lower than 78%
2.56 ±0.15
lower than 55%

Each player's career against an average tour player in the same position, adjusted for opponent strength, with a 90% margin (shots clustered by match). Points left on the table is the gap to the best-value direction for the same stroke, so lower is better. Percentiles are within each player's own tour. A side is highlighted only when the gap is larger than the margin on the difference.

Serve plan

The share of points the server wins when a first serve lands in that direction (hover a rate for its 90% interval; ± is the 90% margin). "Matchup" combines the server's rate with how this returner handles that serve. "Optimal" is the mix that wins most against this returner once they start reading a habit, at the response measured across the tour, and only within the range servers' habits actually vary. The gain over the current mix is how exploitable that mix is.

Kevin Anderson serving

Deuce court

1st serveNowKevin winsv EthanMatchupOptimal
Wide42%73%72%72.2%±6.955% ▲
Body5%69%62%67.6%±12.70% ▼
T53%81%70%77.4%±6.345% ▼

Optimal v Ethan Quinn: +0.3±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.7 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowKevin winsv EthanMatchupOptimal
Wide41%80%77%83.8%±5.734% ▼
Body6%69%54%61.4%±14.20% ▼
T53%76%74%77.3%±6.466% ▲

Optimal v Ethan Quinn: +0.9±0.7 per 100 first serves (faults included) over the current mix. Serving wide every time would read +4.9 per 100 first serves in before the returner adjusts.

Ethan Quinn serving

Deuce court

1st serveNowEthan winsv KevinMatchupOptimal
Wide41%70%76%72.7%±6.941%
Body15%62%67%65.5%±11.22% ▼
T44%78%80%82.2%±5.757% ▲

Optimal v Kevin Anderson: +1.4±0.9 per 100 first serves (faults included) over the current mix. Serving T every time would read +6.4 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowEthan winsv KevinMatchupOptimal
Wide41%75%79%80.8%±6.354% ▲
Body9%67%71%74.9%±11.00% ▼
T50%71%76%75.1%±6.846% ▼

Optimal v Kevin Anderson: +0.4±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +3.4 per 100 first serves in before the returner adjusts.

Return plan

Value of each return, in points per 100 returns against an average return of the same serve (direction, court, surface): the tour's result with that return, the returner's own edge with it, and what this server gives up when it comes back to that side. Returns with no charted direction are left out, so values compare with each other rather than with zero. Depth isn't a choice here: missed returns have no depth. Serve quality isn't charted, so a block through the middle partly reflects the serve that forced it.

Kevin Anderson returning

1st serve to the forehand

ReturnNowTourOwnv EthanValue
FH through the middle41%+4.3−1.2−2.2+0.8±2.8
FH crosscourt29%+5.5−0.2−2.1+3.2±4.2
FH down the line16%+1.7+4.5−6.4−0.3±4.4
FH slice through the middle8%−4.2−1.5−0.6−6.4±2.3
FH slice down the line3%−4.3−0.2−0.8−5.3±2.6

Lean FH crosscourt: +2.7±3.3 per 100 returns v the current mix (469 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv EthanValue
BH through the middle42%+6.4−1.2−1.7+3.5±2.6
BH crosscourt19%+8.8−0.2−0.1+8.5±3.5
BH slice through the middle13%−4.2+1.3−3.1−6.1±2.4
BH down the line12%+4.2+1.2−0.4+5.0±4.3
BH slice crosscourt8%+0.5+1.1−4.0−2.4±2.8

Lean BH crosscourt: +6.5±3.1 per 100 returns v the current mix (504 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv EthanValue
FH through the middle52%−3.5−0.3−0.8−4.5±2.9
FH crosscourt29%−0.2−1.8−0.3−2.3±4.2
FH down the line18%−1.8−0.2−0.4−2.4±4.3

Lean FH crosscourt: +1.2±3.4 per 100 returns v the current mix (136 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv EthanValue
BH through the middle44%−2.9+0.9+0.5−1.5±2.5
BH crosscourt40%+1.0+1.7−2.4+0.4±3.2
BH down the line11%−0.2−2.6−0.1−2.9±4.7
BH slice through the middle3%−11.3−1.3±0.0−12.6±1.1
FH through the middle2%−2.9+0.5−0.8−3.1±2.0

Lean BH crosscourt: +1.6±2.3 per 100 returns v the current mix (249 returns charted, inside the 90% margin)

Ethan Quinn returning

1st serve to the forehand

ReturnNowTourOwnv KevinValue
FH slice through the middle46%−4.2−0.3+4.9+0.3±2.3
FH slice crosscourt28%−4.3−1.0−2.1−7.5±2.7
FH through the middle10%+4.3−1.3+1.0+4.0±2.6
FH crosscourt8%+5.5−0.5−0.6+4.3±4.1
FH slice down the line6%−4.3−2.8−0.9−8.0±2.8

Lean FH crosscourt: +6.0±4.0 per 100 returns v the current mix (189 returns charted)

1st serve to the backhand

ReturnNowTourOwnv KevinValue
BH through the middle32%+6.4−2.5±0.0+3.9±2.7
BH crosscourt21%+8.8−1.9−0.6+6.3±3.6
BH down the line21%+4.2−3.2−0.7+0.3±4.6
BH slice through the middle14%−4.2−2.6+2.3−4.5±2.2
BH slice crosscourt9%+0.5−2.7+0.9−1.3±2.8

Lean BH crosscourt: +4.7±3.1 per 100 returns v the current mix (172 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv KevinValue
FH through the middle52%−3.5+0.3±0.0−3.2±2.7
FH crosscourt28%−0.2+1.9+0.5+2.2±4.0
FH slice crosscourt11%−12.5−0.2±0.0−12.7±1.4
FH slice through the middle9%−12.7−0.3±0.0−13.0±1.0

Lean FH crosscourt: +5.8±3.2 per 100 returns v the current mix (54 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv KevinValue
BH through the middle38%−2.9±0.0−1.0−3.8±2.3
BH crosscourt34%+1.0+0.5−1.1+0.4±3.2
BH down the line12%−0.2−5.3−3.5−9.1±4.6
FH through the middle12%−2.9+0.5±0.0−2.4±2.1
FH inside-out5%+1.0+0.8+0.4+2.1±3.1

Lean BH crosscourt: +3.0±2.4 per 100 returns v the current mix (127 returns charted)

Rally plan

Edge, in points per 100 shots: the hitter's skill with the shot (own) plus how much the receiver usually gives up against it (theirs), both measured against the tour average.

Kevin Anderson

Favour

ShotEdgeOwnTheirs
FH to their forehand · serve +1+0.3±3.6−1.0+1.3
FH to the middle · rally−0.5±2.3−1.4+0.8
FH to the middle · serve +1−1.0±2.7±0.0−0.9
FH to their forehand · rally−1.6±3.0−1.8+0.2
BH to their backhand · return−1.9±2.9+0.4−2.2
BH to their backhand · serve +1−2.2±3.2−0.7−1.5

Avoid

ShotEdgeOwnTheirs
BH to their backhand · rally−5.5±2.3−3.5−2.0
FH to their backhand · serve +1−5.4±3.1−0.7−4.7
FH to their backhand · rally−4.2±2.9−3.0−1.1
FH to the middle · return−3.2±2.3−0.9−2.3
BH to the middle · rally−2.3±2.0−0.7−1.6

Ethan Quinn

Favour

ShotEdgeOwnTheirs
FH slice to the middle · return+4.8±2.3±0.0+4.7
FH to their backhand · rally+2.7±2.8+1.5+1.2
BH slice to their backhand · rally+2.2±2.4+1.7+0.5
BH to the middle · rally+1.7±2.1−0.3+2.1
BH to their backhand · return +1+1.4±3.4+0.9+0.5
FH to their forehand · return +1+0.5±4.2+0.9−0.4

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return−7.7±4.5−4.5−3.2
FH to the middle · rally−3.7±2.3−3.6−0.1
BH to the middle · return−3.4±2.2−1.7−1.7
BH to their backhand · return−2.7±3.2−1.3−1.5
BH to the middle · serve +1−2.3±2.6−1.7−0.6

Against Ethan Quinn-like opponents

Kevin Anderson vMatchesServe pts wonReturn pts won
All charted opponents–67.2%30.2%

Similar by tactical fingerprint: Arthur Rinderknech, Zhizhen Zhang, Aleksandar Kovacevic, Alexei Popyrin, Zizou Bergs, Benjamin Bonzi, Fabio Fognini, Lucas Pouille, Tim Van Rijthoven. When two players have rarely met, their records against these lookalikes fill the gap.