my generation spent an enormous amount of time with chris evert and martina navratilova to mentor them and help them, and we ask them to keep doing it each generation, and we do try to connect the generations, and they do know about the past history, because they're taught the past history. katrina adams is on the board of directors of the usta, but she went to northwestern, she want the ncaas in '87 with diane stone who's, actually, my assistant which is really funny. but, you know, it's just amazing what each generation gives. and we do stand on the shoulders of the generations before us. we just do. and so i'm very thankful to the althea gibsons and the other guys around that time, too, that were very good to me. so we just have to -- yeah, we're all in this together. we earn this together, so we have to help each other. >> what do you think has been the biggest change in tennis in the past 20 years? >> oh, 20, that's not very long ago. well, i think it's been a evolution of equipment change. i mean, this racquet -- can i -- i'm going to mess up my signature, sorry. it's really ligh