Break Of Serve -

on grass), second-serve effectiveness remains relatively constant at around , making it a universal vulnerability for potential breaks.

: Under the pressure of a potential break, players often hit their first serves faster but decelerate their second serves to avoid double faults. break of serve

: Some statistical models suggest that the first game of a match is the hardest one in which to achieve a break of serve. Tennis serve performances at break points - ResearchGate break of serve