21.   One short ball or mis-hit, one passive second serve or ill-conceived drop shot, and Williams could devour it.

22.   Other players keep a spare for the second serve, but Sampras packs light.

23.   Sampras must also serve well enough to keep Rafter from attacking his second serves.

24.   She continued to hit her first serve in on the big points and managed to keep pressure on Hingis even with her second serve.

25.   She knew Davenport would pounce on her second serve, and she knew Davenport would pick her vulnerable backhand like a weak lock.

26.   She dominated Neiland to the point where she once aced her on her second serve.

27.   She served up a double fault with a big second serve.

28.   The big difference is on the second serve.

29.   The King of Grassland had nothing more to offer than second serves that stood up like masochists, begging to be flagellated.

30.   The other was toughening up his second serve, increasing its speed and varying its placement.