Contact a player after game and/or giving him elo?

Hi!

I just won my first game as byzantine, but when I watched the replay I saw how truely undeserved this victory was, for my enemy ("Speedman") only lost because he made one crucial mistake in forgetting to upgrade his pikeman, so my constant harrassing payed off.

Since I saw this in the replay, the victory feels kind of undeserved and I just wanted to write this to said player or - if possible - give him the points for this match.

Is there a way to contact a player?