RallyIQ

Game plan

Frances Tiafoe v Gregoire Barrere

Every number combines what Frances Tiafoe does well with what Gregoire Barrere allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Frances Tiafoe wins, best of 3 93%90%: 83%–98% · best of 5: 97%
Serve points won 70.6% / 58.4% Frances / Gregoire · tour 63.8%
Strengths only, no similarity priors 93%serve 70.1% / 58.3%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Frances Tiafoe's record against Gregoire Barrere's tactical lookalikes and in their charted head-to-heads (lookalikes: +3.2 on serve, −0.8 on return vs expectation (680 points)). 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

CareerFrancesGregoire
Direction choice+0.06 ±0.06
better than 72%
−0.05 ±0.14
better than 44%
Shot selection+0.14 ±0.09
better than 69%
−0.39 ±0.18
better than 17%
Execution−0.26 ±0.34
better than 54%
−1.15 ±0.70
better than 21%
Points left on the table2.38 ±0.11
lower than 75%
2.65 ±0.31
lower than 44%

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.

Frances Tiafoe serving

Deuce court

1st serveNowFrances winsv GregoireMatchupOptimal
Wide50%72%75%74.0%±6.359% ▲
Body8%63%66%66.2%±12.80% ▼
T42%79%77%80.6%±5.641% ▼

Optimal v Gregoire Barrere: +0.4±0.6 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.4 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowFrances winsv GregoireMatchupOptimal
Wide40%76%81%83.2%±5.553% ▲
Body10%60%66%62.9%±13.40% ▼
T51%70%72%69.6%±7.347% ▼

Optimal v Gregoire Barrere: +1.0±0.8 per 100 first serves (faults included) over the current mix. Serving wide every time would read +8.9 per 100 first serves in before the returner adjusts.

Gregoire Barrere serving

Deuce court

1st serveNowGregoire winsv FrancesMatchupOptimal
Wide50%68%75%70.1%±6.163% ▲
Body9%55%65%56.8%±12.20% ▼
T41%64%76%65.9%±7.337% ▼

Optimal v Frances Tiafoe: +0.7±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.9 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowGregoire winsv FrancesMatchupOptimal
Wide51%70%78%75.0%±6.364% ▲
Body8%63%67%66.6%±12.28%
T41%62%76%66.4%±7.528% ▼

Optimal v Frances Tiafoe: +0.3±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +4.2 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.

Frances Tiafoe returning

1st serve to the forehand

ReturnNowTourOwnv GregoireValue
FH through the middle43%+4.3−0.1+0.6+4.8±2.5
FH crosscourt21%+5.5−1.6+2.6+6.5±4.1
FH down the line19%+1.7−1.6+0.9+1.0±4.2
FH slice through the middle12%−4.2−0.1+0.7−3.6±2.3
FH slice down the line3%−4.3+0.7−1.1−4.7±2.8

Lean FH crosscourt: +3.5±3.5 per 100 returns v the current mix (816 returns charted)

1st serve to the backhand

ReturnNowTourOwnv GregoireValue
BH through the middle44%+6.4−0.1+3.8+10.1±2.4
BH crosscourt27%+8.8+1.2+0.3+10.3±3.3
BH down the line10%+4.2−1.0−1.1+2.1±4.5
BH slice through the middle9%−4.2−0.9−0.1−5.2±2.5
BH slice crosscourt7%+0.5−2.9−1.2−3.5±2.8

Lean BH crosscourt: +4.2±2.7 per 100 returns v the current mix (714 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv GregoireValue
FH through the middle50%−3.5−1.6−1.4−6.4±2.8
FH crosscourt25%−0.2−1.3+1.1−0.4±4.4
FH down the line23%−1.8−1.4+0.2−2.9±4.7
FH slice through the middle3%−12.7+0.3±0.0−12.4±1.1

Lean FH crosscourt: +3.9±3.7 per 100 returns v the current mix (225 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv GregoireValue
BH crosscourt49%+1.0+1.6+0.3+3.0±2.9
BH through the middle38%−2.9−1.2+1.7−2.4±2.3
BH down the line12%−0.2+1.6−0.2+1.2±4.9
BH slice through the middle1%−11.3−0.2±0.0−11.5±1.0

Lean BH crosscourt: +2.4±1.8 per 100 returns v the current mix (471 returns charted)

Gregoire Barrere returning

1st serve to the forehand

ReturnNowTourOwnv FrancesValue
FH through the middle41%+4.3+2.5+2.3+9.0±2.5
FH down the line20%+1.7+1.5−1.7+1.5±4.1
FH slice through the middle20%−4.2+0.2−0.2−4.2±2.3
FH crosscourt13%+5.5−1.3−0.9+3.4±3.9
FH slice down the line6%−4.3+0.8−1.8−5.3±2.8

Lean FH through the middle: +5.7±1.8 per 100 returns v the current mix (159 returns charted)

1st serve to the backhand

ReturnNowTourOwnv FrancesValue
BH through the middle39%+6.4+3.5−0.3+9.6±2.5
BH slice through the middle21%−4.2−2.7−2.1−9.0±2.4
BH crosscourt19%+8.8+1.0−3.0+6.8±3.4
BH slice crosscourt9%+0.5−1.0−0.2−0.7±2.8
BH down the line7%+4.2+0.1−4.2+0.2±4.1

Lean BH through the middle: +7.0±1.8 per 100 returns v the current mix (150 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv FrancesValue
FH through the middle47%−3.5−1.3+0.5−4.3±2.6
FH down the line41%−1.8−0.8−3.2−5.8±4.6
FH crosscourt12%−0.2+0.4±0.0+0.2±3.6

Lean FH through the middle: +0.1±2.4 per 100 returns v the current mix (68 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv FrancesValue
BH through the middle49%−2.9+1.4+1.9+0.5±2.1
BH crosscourt40%+1.0−3.3+0.8−1.5±2.7
BH down the line11%−0.2+1.0−1.3−0.5±3.9

Lean BH through the middle: +0.9±1.6 per 100 returns v the current mix (85 returns charted, inside the 90% margin)

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 on hard. Each player's hard record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Frances Tiafoe

Favour

ShotEdgeOwnTheirs
FH to their backhand · rally+3.7±3.6−0.7+4.4
FH to their backhand · serve +1+3.1±4.4−0.7+3.8
BH to the middle · rally+3.0±2.4+0.3+2.7
BH to their backhand · serve +1+2.6±4.0+0.1+2.5
BH to their backhand · return+2.5±3.8+0.8+1.7
FH to their backhand · return +1+2.4±5.3+1.1+1.3

Avoid

ShotEdgeOwnTheirs
FH to the middle · rally−5.1±2.8−1.5−3.6
BH to their forehand · rally−3.1±5.3−1.0−2.1
BH slice to their backhand · rally−2.9±3.1−0.3−2.6
FH to their backhand · return−2.7±5.1−3.8+1.1
FH to their forehand · return +1−2.2±5.4−0.8−1.4

Gregoire Barrere

Favour

ShotEdgeOwnTheirs
BH to their backhand · return +1+4.9±4.2+3.2+1.7
FH to the middle · return+4.7±3.1+2.1+2.6
FH to the middle · serve +1+4.1±3.4+1.1+3.0
FH to their forehand · return +1+3.4±5.4±0.0+3.4
FH to their forehand · serve +1+1.6±4.5−1.2+2.8
FH to their backhand · rally+1.3±3.5+0.5+0.8

Avoid

ShotEdgeOwnTheirs
BH to their backhand · return−6.0±3.9−3.9−2.1
FH to their backhand · return−5.9±5.2−3.1−2.8
BH to their forehand · rally−3.5±5.2−4.6+1.1
BH to the middle · serve +1−1.5±3.3−2.5+1.0
FH to their forehand · rally−0.8±3.2−1.8+1.0

Against Gregoire Barrere-like opponents

Frances Tiafoe vMatchesServe pts wonReturn pts won
All charted opponents–64.1%33.4%
Players most similar to Gregoire Barrere3 67.6%35.4%

Similar by tactical fingerprint: Jakub Mensik, Karen Khachanov, Alexander Shevchenko, Laslo Djere, Rinky Hijikata, Alexandre Muller, Luca Nardi, Roman Safiullin, Fabio Fognini, Otto Virtanen. When two players have rarely met, their records against these lookalikes fill the gap.