RallyIQ

Game plan

Andy Roddick v Guillermo Canas

Every number combines what Andy Roddick does well with what Guillermo Canas allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Andy Roddick wins, best of 3 80%90%: 59%–93% · best of 5: 85%
Serve points won 72.7% / 65.5% Andy / Guillermo · tour 65.7%
Strengths only, no similarity priors 75%serve 72.1% / 66.2%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Andy Roddick's record against Guillermo Canas's tactical lookalikes and in their charted head-to-heads (lookalikes: +2.8 on serve, +3.7 on return vs expectation (487 points); head-to-head: +3.1 on serve, +1.5 on return vs expectation (274 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

CareerAndyGuillermo
Direction choice+0.07 ±0.04
better than 75%
−0.13 ±0.13
better than 23%
Shot selection+0.10 ±0.08
better than 64%
−0.02 ±0.24
better than 50%
Execution+0.65 ±0.22
better than 87%
+0.01 ±0.49
better than 68%
Points left on the table2.50 ±0.07
lower than 60%
2.57 ±0.12
lower than 53%

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.

Andy Roddick serving

Deuce court

1st serveNowAndy winsv GuillermoMatchupOptimal
Wide47%75%76%78.1%±6.441% ▼
Body7%71%64%72.1%±11.10% ▼
T46%82%79%84.9%±5.359% ▲

Optimal v Guillermo Canas: +0.4±0.6 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowAndy winsv GuillermoMatchupOptimal
Wide41%77%71%76.1%±6.335% ▼
Body8%70%71%77.0%±10.20% ▼
T52%75%73%76.0%±7.165% ▲

Optimal v Guillermo Canas: +0.3±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving body every time would read +0.9 per 100 first serves in before the returner adjusts.

Guillermo Canas serving

Deuce court

1st serveNowGuillermo winsv AndyMatchupOptimal
Wide44%66%78%72.0%±7.044%
Body13%56%63%55.8%±12.00% ▼
T43%77%80%82.2%±6.256% ▲

Optimal v Andy Roddick: +1.2±0.9 per 100 first serves (faults included) over the current mix. Serving T every time would read +8.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowGuillermo winsv AndyMatchupOptimal
Wide39%69%76%72.4%±7.952% ▲
Body8%67%66%69.8%±12.90% ▼
T54%68%75%70.8%±7.648% ▼

Optimal v Andy Roddick: +0.3±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +1.1 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.

Andy Roddick returning

1st serve to the forehand

ReturnNowTourOwnv GuillermoValue
FH through the middle44%+4.3+0.7+1.7+6.7±2.4
FH down the line23%+1.7+1.1+0.7+3.4±3.7
FH crosscourt13%+5.5−2.4−1.7+1.4±3.5
FH slice through the middle12%−4.2+2.5±0.0−1.7±1.2
FH slice down the line5%−4.3+1.8±0.0−2.5±2.1

Lean FH through the middle: +3.1±1.7 per 100 returns v the current mix (2346 returns charted)

1st serve to the backhand

ReturnNowTourOwnv GuillermoValue
BH through the middle44%+6.4+0.5+1.9+8.8±2.2
BH crosscourt28%+8.8+1.3+0.3+10.4±2.8
BH down the line12%+4.2+0.3−1.0+3.6±3.7
BH slice through the middle9%−4.2+2.6−1.6−3.2±2.2
BH slice crosscourt4%+0.5−2.5+1.8−0.2±2.6

Lean BH crosscourt: +3.7±2.3 per 100 returns v the current mix (2177 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv GuillermoValue
FH through the middle48%−3.5+0.3+0.7−2.4±2.4
FH down the line20%−1.8+2.6−1.2−0.4±4.1
FH crosscourt16%−0.2−1.1−0.5−1.8±3.9
FH slice through the middle6%−12.7+2.5±0.0−10.1±1.7
BH through the middle3%+0.1−2.2+0.3−1.8±2.0

Lean FH down the line: +2.2±3.5 per 100 returns v the current mix (718 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv GuillermoValue
BH crosscourt43%+1.0+0.8+0.4+2.2±2.6
BH through the middle36%−2.9+1.0+0.3−1.6±2.1
BH down the line10%−0.2+1.4+1.1+2.3±3.7
FH through the middle5%−2.9+1.4+0.7−0.8±2.4
FH inside-out4%+1.0+1.3−1.2+1.1±3.4

Lean BH down the line: +1.8±3.6 per 100 returns v the current mix (1827 returns charted, inside the 90% margin)

Guillermo Canas returning

1st serve to the forehand

ReturnNowTourOwnv AndyValue
FH through the middle53%+4.3−0.8−1.3+2.1±2.4
FH down the line28%+1.7+1.0−2.5+0.2±3.6
FH crosscourt19%+5.5+1.9−1.9+5.5±3.4

Lean FH crosscourt: +3.3±3.2 per 100 returns v the current mix (102 returns charted)

1st serve to the backhand

ReturnNowTourOwnv AndyValue
BH through the middle44%+6.4−2.2−1.5+2.7±2.3
BH crosscourt26%+8.8−0.5−3.4+4.8±3.0
BH slice through the middle12%−4.2−1.4+0.8−4.8±1.8
BH down the line9%+4.2±0.0−4.1+0.2±3.6
BH slice crosscourt9%+0.5−1.0−0.8−1.2±2.2

Lean BH crosscourt: +3.1±2.5 per 100 returns v the current mix (123 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv AndyValue
BH through the middle61%−2.9−2.4−1.0−6.3±2.0
BH crosscourt29%+1.0−0.5−1.4−0.9±2.6
BH down the line10%−0.2+1.7−1.7−0.2±3.9

Lean BH crosscourt: +3.2±2.2 per 100 returns v the current mix (124 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 grass. Each player's grass record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Andy Roddick

Favour

ShotEdgeOwnTheirs
FH to their backhand · serve +1+4.8±3.4+3.0+1.8
FH to the middle · return+3.6±2.6+1.5+2.1
BH to their backhand · return+2.4±3.2+2.6−0.2
BH to the middle · return+2.0±2.3+1.0+1.0
BH to their backhand · rally+1.0±2.4−0.9+2.0
BH to their forehand · rally−0.1±4.4−0.9+0.8

Avoid

ShotEdgeOwnTheirs
FH to their forehand · rally−3.1±2.9−2.5−0.6
FH to their forehand · return +1−2.0±4.3−1.1−0.8
BH to their backhand · return +1−1.5±3.8−3.5+2.0
FH to their forehand · serve +1−1.5±3.9−5.3+3.9
FH to the middle · rally−1.3±2.5−0.8−0.5

Guillermo Canas

Favour

ShotEdgeOwnTheirs
FH to their forehand · return +1+5.2±4.5+2.0+3.1
FH to their forehand · rally+3.7±2.9+1.4+2.3
FH to their backhand · rally+2.5±2.8+0.5+2.0
FH to their forehand · serve +1+2.3±3.8+2.4−0.1
FH to their backhand · serve +1+2.1±3.4−0.2+2.3
FH to the middle · return+0.4±2.7−0.4+0.8

Avoid

ShotEdgeOwnTheirs
BH to the middle · return−3.0±2.4−2.4−0.7
BH to their backhand · rally−1.1±2.5−1.3+0.2
BH to the middle · rally−1.0±2.2+0.7−1.7
BH to their backhand · return−0.4±3.6−1.0+0.7
FH to the middle · rally+0.3±2.4+0.6−0.3

Against Guillermo Canas-like opponents

Andy Roddick vMatchesServe pts wonReturn pts won
All charted opponents–68.4%32.4%
Players most similar to Guillermo Canas3 71.7%41.0%
Guillermo Canas (charted head-to-head)2 71.7%37.4%

Similar by tactical fingerprint: Tomas Martin Etcheverry, Botic Van De Zandschulp, Miomir Kecmanovic, Camilo Ugo Carabelli, Jordan Thompson, Andreas Seppi, David Ferrer, Sebastien Grosjean, Aaron Krickstein. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head