2021 ATP Surface Speed Ratings

My surface-speed metric uses ace rate--adjusted for the servers and returners in each match--to rate each tournament by surface speed. Thus, the number indirectly accounts for everything that influenced play: temperature, humidity, wind, balls, and of course the physical surface.

Ratings greater than 1 are faster than average. For example, a rating of 1.25 indicates that the players hit 25% more aces than they would have on a tour-average surface.

Click here for the most recent ratings, or

DateTournamentSurfaceAce%Surface Speed
08-Nov-2021NextGen FinalsHard6.7%1.56
15-Nov-2021Tour FinalsHard15.9%1.51
21-Jun-2021MallorcaGrass12.6%1.35
26-Jul-2021AtlantaHard17.7%1.34
23-Aug-2021Winston-SalemHard10.7%1.33
15-Mar-2021DubaiHard11.9%1.33
22-Feb-2021MontpellierHard10.1%1.32
08-Mar-2021SantiagoClay7.9%1.29
16-Aug-2021Cincinnati MastersHard12.5%1.29
30-Aug-2021US OpenHard12.5%1.27
18-Oct-2021AntwerpHard9.7%1.27
09-Aug-2021Canada MastersHard14.1%1.26
12-Jul-2021NewportGrass17.5%1.25
14-Jun-2021Queen's ClubGrass13.0%1.23
08-Mar-2021MarseilleHard12.0%1.23
14-Jun-2021HalleGrass11.9%1.22
25-Oct-2021ViennaHard10.9%1.22
01-Feb-2021Murray River OpenHard9.6%1.21
07-Jun-2021StuttgartGrass14.3%1.19
20-Sep-2021MetzHard9.5%1.19
19-Jul-2021Los CabosHard15.5%1.17
08-Feb-2021Australian OpenHard11.0%1.16
27-Sep-2021SofiaHard9.4%1.14
01-Nov-2021Paris MastersHard10.4%1.14
19-Jul-2021GstaadClay8.5%1.12
01-Feb-2021Great Ocean Road OpenHard10.1%1.12
02-Feb-2021Atp CupHard9.9%1.11
02-Aug-2021WashingtonHard10.1%1.08
28-Jun-2021WimbledonGrass10.2%1.07
04-Jan-2021Delray BeachHard9.8%1.05
08-Nov-2021StockholmHard9.0%1.05
08-Mar-2021DohaHard9.9%1.05
25-Oct-2021St. PetersburgHard10.5%1.00
27-Sep-2021San DiegoHard8.4%0.99
21-Jun-2021EastbourneGrass8.8%0.98
22-Feb-2021CordobaClay4.5%0.97
22-Feb-2021SingaporeHard12.3%0.97
22-Mar-2021Miami MastersHard9.2%0.95
01-Mar-2021RotterdamHard8.6%0.94
18-Oct-2021MoscowHard9.1%0.94
17-May-2021LyonClay6.7%0.89
05-Jan-2021AntalyaHard8.2%0.85
03-May-2021Madrid MastersClay8.6%0.82
24-May-2021ParmaClay6.5%0.81
20-Sep-2021Nur-SultanHard8.1%0.79
26-Jul-2021KitzbuhelClay6.5%0.78
01-Mar-2021Buenos AiresClay5.0%0.77
31-May-2021Roland GarrosClay7.2%0.77
05-Apr-2021MarbellaClay6.0%0.76
26-Apr-2021MunichClay6.8%0.75
17-May-2021GenevaClay7.0%0.75
12-Jul-2021HamburgClay6.0%0.74
10-May-2021Rome MastersClay7.5%0.72
04-Oct-2021Indian Wells MastersHard7.1%0.71
15-Mar-2021AcapulcoHard7.3%0.71
12-Jul-2021BastadClay5.7%0.70
26-Apr-2021EstorilClay6.0%0.65
19-Apr-2021BarcelonaClay4.8%0.63
19-Apr-2021BelgradeClay6.0%0.62
19-Jul-2021UmagClay4.0%0.60
12-Apr-2021Monte Carlo MastersClay4.7%0.54
24-May-2021Belgrade 2Clay3.7%0.48
05-Apr-2021CagliariClay3.2%0.35