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The tremendous data that shows the slowing down of the courts at the Shanghai tournament

Diego Jiménez Rubio - 3 Oct 2025
Slow courts at the Shanghai tournament. Photo: gettyimages

There is a clear trend on the ATP circuit to make all courts progressively slower, but in the case of the ATP Masters 1000 Shanghai 2025, this slowdown has been particularly abrupt and noticeable. In fact, the Court Pace Index (CPI), a measure of court speed, stands at 32.9 in the current edition, a significant shift from the 40.8 the courts had in the previous year's tournament. While Yonex balls, lighter than usual, are being used, the prevailing humidity compensates for it and enhances the feeling of slowness on the courts.

This is an automatic translation. You can read the original news, El tremendo dato que demuestra la ralentización de las pistas del torneo de Shanghái