And they also say Fed benefitted from a modern racquet and string. Yeah, so much benefit for having to deal with constant barrage with tremendous topspin, fast pace, and devastating serve by his peers. Players in the old days with the wooden racquet never had to deal with these onslaught. It's true that their racquet with a smaller head is not as effective as the modern racquet, but the game was slow, there's much less action on the ball, not much imposing. Mastering the modern racquet is harder than the old racquet, especially for a player with a 1 handed bh. The 1 handed bh rallies from the baseline was never tested as great as today. To be honest, I don't believe Rosewall's 1 handed bh would be as effective as it was in the 60s, and he probably settle to play 2 handed.