You've seen Andre Agassi and Pete Sampras square off in one of the most storied singles rivalries in Open Era history, but how do two of America's greatest singles champions stack up in doubles?

Agassi and Sampras took their rivalry to the doubles court in Macao last month as Agassi partnered American Ryan Harrison and Sampras teamed up with India's Yuki Bhambri.

Trash talk was flying — all four players wore microphones on court — with Agassi advising Harrison to "hit it to the guy who's losing his hair!"

Sampras responds mimicking the Agassi return stance prompting Agassi to simulate the Sampras serve complete with waving racquet, toe point and sticking his tongue out before serving.

"Take this return back to India!" Agassi tells Bhambri at one point. And when Sampras offers Bhambri pre-point advice, Agassi yells "Don't listen to him, he knows nothing about tennis!"

View highlights of the doubles match here: