Just for fun, here's one for argument and speculation: Can today's club player, around 4.5 or higher and armed with today's equipment, training, gear, shoes, coaching, technique, workout regimen, etc. be competitive with one of yesterday's pros in their prime? Note: I'm assuming yesterday's pros will be still using their equipment from the 60s, 70s, and 80s, and will have no benefit of being able to use the gear from the 90's and 2000's. The fun in this is there's no way to prove this one way or another, and it's all just for speculative fun, sorta like arguing who is the best player ever -- you come up with great champs from different eras but it's hard to say who's better since they never will meet each other in their primes for us to see and since the conditions of the sport were varied for all the different eras. Still, imagine if you at your best and in your prime could find yourself suddenly on a court armed with today's best in equipment, training, etc. and on the other side is, say, Stan Smith when he was still in his prime, in his old white Adidas shoes carrying his trusty wooden racquet waiting for you to serve and start a best of five sets! Fun to think about!