He’s also now using the hot Babolat RPM Blast polyester string that Rafael Nadal introduced at the Australian Open this year. Looks like Sampras has joined the Babolat and poly bandwagon.

He picked the Babolat Pure Aero racked by himself and ... We also developed a string for him that was the RPM Blast that gives him even more topspin.” It was always easy to work with Rafa ...