RallyIQ

Game plan

Frances Tiafoe v Tomas Berdych

Every number combines what Frances Tiafoe does well with what Tomas Berdych 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 44%90%: 32%–56% · best of 5: 43%
Serve points won 65.8% / 67.0% Frances / Tomas · tour 63.8%
Strengths only, no similarity priors 47%serve 66.2% / 66.9%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Tomas Berdych's tactical lookalikes and in their charted head-to-heads (lookalikes: −3.5 on serve, −1.5 on return vs expectation (364 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

CareerFrancesTomas
Direction choice+0.06 ±0.06
better than 72%
+0.03 ±0.05
better than 65%
Shot selection+0.14 ±0.09
better than 69%
+0.23 ±0.08
better than 74%
Execution−0.26 ±0.34
better than 54%
−0.28 ±0.28
better than 53%
Points left on the table2.38 ±0.11
lower than 75%
2.33 ±0.07
lower than 82%

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 TomasMatchupOptimal
Wide50%72%76%74.7%±3.455% ▲
Body8%63%68%67.8%±7.80% ▼
T42%79%80%83.2%±3.145% ▲

Optimal v Tomas Berdych: +0.6±0.4 per 100 first serves (faults included) over the current mix. Serving T every time would read +5.4 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowFrances winsv TomasMatchupOptimal
Wide40%76%79%81.4%±3.653% ▲
Body10%60%60%57.3%±9.00% ▼
T51%70%76%74.0%±3.647% ▼

Optimal v Tomas Berdych: +1.3±0.6 per 100 first serves (faults included) over the current mix. Serving wide every time would read +6.1 per 100 first serves in before the returner adjusts.

Tomas Berdych serving

Deuce court

1st serveNowTomas winsv FrancesMatchupOptimal
Wide48%77%75%78.4%±3.161% ▲
Body10%62%65%64.3%±7.60% ▼
T42%77%76%78.1%±3.639% ▼

Optimal v Frances Tiafoe: +1.0±0.6 per 100 first serves (faults included) over the current mix. Serving wide every time would read +1.6 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowTomas winsv FrancesMatchupOptimal
Wide43%75%78%79.9%±3.537% ▼
Body7%65%67%69.1%±8.00% ▼
T50%73%76%77.0%±3.663% ▲

Optimal v Frances Tiafoe: +0.1±0.5 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.2 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 TomasValue
FH through the middle43%+4.3−0.1−0.9+3.2±1.8
FH crosscourt21%+5.5−1.6−0.7+3.1±3.6
FH down the line19%+1.7−1.6−1.9−1.8±3.5
FH slice through the middle12%−4.2−0.1+2.2−2.1±2.0
FH slice down the line3%−4.3+0.7+0.5−3.0±3.1

Lean FH through the middle: +1.9±1.5 per 100 returns v the current mix (816 returns charted)

1st serve to the backhand

ReturnNowTourOwnv TomasValue
BH through the middle44%+6.4−0.1−1.9+4.4±1.9
BH crosscourt27%+8.8+1.2+0.4+10.3±2.8
BH down the line10%+4.2−1.0−1.5+1.7±4.4
BH slice through the middle9%−4.2−0.9+0.7−4.4±2.1
BH slice crosscourt7%+0.5−2.9+1.4−1.0±2.7

Lean BH crosscourt: +6.5±2.3 per 100 returns v the current mix (714 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv TomasValue
FH through the middle50%−3.5−1.6+1.6−3.5±2.3
FH crosscourt25%−0.2−1.3+1.0−0.5±4.1
FH down the line23%−1.8−1.4+1.7−1.5±4.2
FH slice through the middle3%−12.7+0.3+0.2−12.3±1.7

Lean FH crosscourt: +2.0±3.4 per 100 returns v the current mix (225 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv TomasValue
BH crosscourt49%+1.0+1.6+0.5+3.2±2.2
BH through the middle38%−2.9−1.2−0.1−4.2±1.8
BH down the line12%−0.2+1.6+1.3+2.7±4.5
BH slice through the middle1%−11.3−0.2−0.2−11.7±1.8

Lean BH crosscourt: +3.0±1.4 per 100 returns v the current mix (471 returns charted)

Tomas Berdych returning

1st serve to the forehand

ReturnNowTourOwnv FrancesValue
FH through the middle49%+4.3+1.8+2.3+8.3±1.6
FH down the line26%+1.7−0.7−1.7−0.7±3.4
FH crosscourt17%+5.5+0.4−0.9+5.0±3.5
FH slice through the middle4%−4.2−0.2−0.2−4.6±2.3
FH slice down the line2%−4.3+1.5−1.8−4.6±3.2

Lean FH through the middle: +3.9±1.4 per 100 returns v the current mix (1497 returns charted)

1st serve to the backhand

ReturnNowTourOwnv FrancesValue
BH through the middle38%+6.4−0.3−0.3+5.8±1.8
BH crosscourt21%+8.8+0.4−3.0+6.3±2.9
BH slice through the middle15%−4.2+0.1−2.1−6.1±2.1
BH down the line14%+4.2+2.8−4.2+2.8±4.1
BH slice crosscourt8%+0.5+0.6−0.2+1.0±2.9

Lean BH crosscourt: +3.8±2.5 per 100 returns v the current mix (1553 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv FrancesValue
FH through the middle49%−3.5−0.1+0.5−3.1±2.4
FH crosscourt27%−0.2+1.5±0.0+1.3±4.2
FH down the line24%−1.8+2.1−3.2−2.8±4.6

Lean FH crosscourt: +3.1±3.4 per 100 returns v the current mix (336 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv FrancesValue
BH through the middle40%−2.9+0.5+1.9−0.4±1.6
BH crosscourt34%+1.0±0.0+0.8+1.9±2.2
BH down the line20%−0.2+0.3−1.3−1.2±4.1
BH slice through the middle2%−11.3−2.7−0.7−14.7±2.2
BH slice crosscourt2%−4.0−0.8+0.2−4.6±2.4

Lean BH crosscourt: +2.0±1.8 per 100 returns v the current mix (992 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 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 forehand · serve +1+5.5±2.6+0.9+4.6
BH to their forehand · return +1+4.8±5.7+3.2+1.5
BH volley to their forehand · rally+4.3±8.2+2.7+1.6
FH slice to the middle · return+3.7±2.5+0.3+3.4
BH to the middle · serve +1+2.9±2.4+1.7+1.2
BH to their backhand · serve +1+2.6±2.4+0.1+2.4

Avoid

ShotEdgeOwnTheirs
BH slice to their forehand · rally−6.7±4.3−6.2−0.6
FH to their backhand · return−4.6±3.3−3.8−0.7
BH to their forehand · return−3.4±4.6−3.4±0.0
FH to their forehand · return−3.1±4.2−2.2−1.0
FH volley to their forehand · rally−2.9±7.8−4.5+1.6

Tomas Berdych

Favour

ShotEdgeOwnTheirs
FH to their forehand · return +1+7.2±3.4+3.8+3.4
FH to the middle · return+4.7±1.7+2.1+2.6
FH to their forehand · serve +1+3.5±2.7+0.8+2.8
FH volley to their backhand · rally+2.7±8.0−1.4+4.1
FH to their forehand · return+2.6±3.9+3.6−1.0
FH to their backhand · serve +1+1.8±2.4−1.8+3.5

Avoid

ShotEdgeOwnTheirs
FH slice to their backhand · rally−10.8±5.4−7.2−3.6
BH volley to their forehand · rally−7.0±8.3−4.9−2.2
BH slice to the middle · rally−6.4±2.4−3.7−2.7
BH slice to their backhand · serve +1−4.4±4.1−3.9−0.5
BH slice to their forehand · rally−4.2±3.9−4.7+0.5

Against Tomas Berdych-like opponents

Frances Tiafoe vMatchesServe pts wonReturn pts won
All charted opponents–64.1%33.4%
Players most similar to Tomas Berdych3 60.1%35.9%

Similar by tactical fingerprint: Tommy Paul, Felix Auger Aliassime, Rinky Hijikata, Roman Safiullin, Fabio Fognini, Lucas Pouille, Kyle Edmund, Andy Roddick, Robin Soderling. When two players have rarely met, their records against these lookalikes fill the gap.