81 games, jeez.  I did it in like 7 or so. 
Seriously though, how many did it take you? 30-40? 
I'm serious.  Well 7 matches really, some of them 5 game, some of them 3 game. 
I've played tennis for 18 years though. 
Yeah, you said that.  
Still pretty impressive though. It took me forever to understand the concept of hitting the ball early/late and what that meant.