the last player to do that was steffi graf, who's probably the second-greatest player that ever lived behind serena. she did that 1988. before that it was done i think 1950. so this is very, very rare. >> jimmy: have you ever hit with serena? >> i have hit with serena. >> jimmy: if you played a serious match, who do you think would win that match? >> my daughters are over there. i think it's mixed. they think i'd probably lose to serena. i believe that i could still take her. >> jimmy: you do? [ cheers and applause ] >> 15 years ago, donald trump, who seems to be in the news a little bit -- >> jimmy: he's going to be our president soon, yes. laugh live. >> going to be the president, he made an offer which i felt like was not enough, and i think he was humoring the two of us. serena, she's got a lot to lose by losing to an old fart like myself. >> jimmy: right, it's not a great deal for her. >> if i lose to god forbid a woman, then i'm not allowed in any men's locker room for the next 15 years or possibly the end of my life. so that's part of why it's intriguing. >> jimmy: yeah. >> if