Originally Posted by SystemicAnomaly
^ If you put the weaker player in the ad court, he will be playing most of the game-deciding points (40-0, 0-40, 40-30, 30-40, ad in, ad out). The only points that can be won/lost on the deuce side are 40-15 & 15-40.
But since he will be receiving equal or less points, the team will do better statistically than him returning equal or more points. This is in addition to the advantage I described and to another I didn't mention, namely that for a RH player, middle shots will be to his FH. No brainer, really...