yarrr, ye scurvy boy-king, halt ye whinin'

It is an odd thing about tennis matches: they can last for hours – sometimes for days – and yet the result can hang on no more than a couple of moments – a netted passing shot here, a double fault there – just fractions of a second in the middle of hours of sweat and graft. For all the hundreds of shots each man will play over the course of a match, it could be one moment of hesitancy or a split second of carelessness that makes all the difference. Once the momentum shifts, it takes a superhuman effort to get it back.

from here