Featured in The New York Times & BBC

Court Speed

Court Pace Index measurements for the Grand Slams, Masters 1000s and ATP Finals, 2012–2026 — with ace rates, rally lengths and air density. Updated through the season, sourced from official ATP/TennisTV data.

Tournament’12’13’14’15’16’17’18’19’20’21’22’23’24’25’263yr
Australian OpenAus OpenHard8.2%9.9%10.2%10.7%9.3%8.6%9.8%11.4%9.6%11.0%10.2%10.8%11.1%10.8%11.7%11.1%
Indian WellsHard8.5%8.0%9.2%10.5%8.2%9.9%10.1%7.6%COVID7.1%9.2%8.1%8.5%7.1%11.0%8.7%
MiamiHard8.2%8.8%10.2%8.4%10.0%8.7%9.5%9.5%COVID9.2%9.4%11.1%10.8%12.5%12.8%11.8%
Monte CarloClay5.8%5.9%5.8%6.2%5.9%5.2%5.9%4.7%COVID4.7%5.2%6.3%6.1%5.3%5.7%5.8%
MadridClay10.6%7.3%8.8%9.2%8.6%9.5%8.8%7.0%COVID8.6%9.0%8.8%7.3%8.5%9.3%8.5%
RomeClay5.2%7.7%7.4%9.3%7.2%9.4%7.0%7.0%6.7%7.5%6.4%6.1%7.5%6.3%6.7%6.7%
Roland GarrosClay7.1%6.8%7.1%7.0%7.5%7.7%7.8%7.0%4.9%7.2%6.1%5.7%6.7%7.3%6.6%
WimbledonGrass11.5%12.9%13.2%13.0%11.8%11.3%12.9%10.5%COVID10.2%9.7%10.5%12.1%11.6%11.4%
Canadian OpenCanadaHard10.4%9.3%11.6%12.2%12.6%10.5%13.0%11.0%COVID14.1%10.3%9.4%8.7%11.2%9.8%
CincinnatiHard11.1%11.9%11.0%12.2%14.0%14.7%11.4%11.6%8.7%12.5%11.8%8.3%11.8%12.8%11.0%
US OpenHard10.8%9.6%10.9%11.4%9.0%10.3%10.8%10.2%9.9%12.5%10.2%9.9%11.4%10.6%10.6%
ShanghaiHard10.9%13.1%13.0%12.7%10.7%15.2%12.3%13.0%COVIDCOVIDCOVID10.3%10.9%11.2%10.8%
ParisHard · indoor11.6%12.2%10.9%10.5%13.7%11.0%11.1%11.9%11.7%10.4%10.6%11.4%13.3%10.5%11.7%
ATP FinalsHard · indoor9.3%9.6%8.7%8.0%10.3%7.6%15.2%11.7%11.2%15.9%16.7%14.8%13.4%12.0%13.4%
Ace rate %<7% Low7–8.5 Medium-low8.5–9.5 Medium9.5–11 Medium-high>11% High Ace rate, adjusted for servers and returners — TennisAbstract · venue change