This question is somewhat related to this thread: http://tt.tennis-warehouse.com/showthread.php?t=118381 Does playing Line 1 Doubles or Singles, and winning, help you move up to the next level faster? For example, would a 3.0 playing line 1 doubles and winning move up faster to 3.5, rather than a 3.0 playing line 3 doubles? I understand this doesn't take into account your opponents rated strenght, but answer as best as posssible. For example, would playing line 1 be better because it's more likely you'll play harder opponents? Or is playing line 1 better simply because USTA looks on it more favorably when calculating your ratings? I hope this makes sense.