Rafa won that match featured in the play of the week.
I would consider Rafa the favorite on every current surface, but it would be interesting. Agassi had such great hands and such a solid two hander, he might be able to step in and neutralize some of Nadal's spin by hitting on the rise. If his backhand down the line was on fire and he was stepping in and hitting bombs, you figure he could do what Blake has done to Nadal in the past. The thing about Blake, though, is he's much faster than Agassi. Agassi was a good tennis mover because he could hit the ball so early, he was willing to go straight to the ball, cutting down the angles and traveling a shorter distance, but he wasn't a world class mover.
Agassi was like the Cesar Chavez of tennis, he used body blows to take out the legs from his opponent. He would intentionally prolong points so that in the later sets his opponent would be dead. Don't see that working against Nadal.
Anyway, Nadal leads the head to head 2-0.