Courier tried to get Nadal to quantify how he feels, asking him on a scale of 0 to 100 percent how does he feel physically? Courier, who won four Grand Slams before retiring, waited as Nadal gave a long response that didn't answer the questions. He pressed him again.
''I want a number,'' Courier said.
The crowd laughed, and Nadal did, too.
''I was never very good at mathematics,'' Nadal said.