With another terrific performance on Sunday, R. A. Dickey continued to demonstrate that he could perform at the highest level of his sport. Now he wants to show he can do it in another sport, only not as a player.

Dickey dreams of being a ball boy at the United States Open tennis tournament. Or, as in the case of Kramer in an episode of the television show “Seinfeld,” he wants to be a ball man  a bearded, knuckleball-throwing, 35-year-old ball man.

“I think it would be really cool,” Dickey said, adding: “I’m really serious. Do you think I can do it?”

Not this year. Dickey missed the tryouts conducted by the United States Tennis Association in June, and besides, the Mets will be on the road for the next 10 days, so he would be unavailable for most of the Open, especially the early rounds, when the demand for ball boys and ball girls is higher.