I think this is the best match Seles ever played:
http://www.youtube.com/watch?v=8ZLikDKoCKs
Totally overpowered the great Steffi Graf in the last 2 sets, allowing her only 5 games, outserving her, outforehanding her, outrunning her, outvolleying her, beating her in every department, not just the expected ones between the two like backhand and return of serve. Steffi played very well too, was just outplayed.