The reason 2K is famous is the MyPlayer mode, which is amazing, I can't lie, love it. I've never played 2K online but I've heard the servers are really crappy, Live on the other hand was very fluent most of the time, even in 5 V 5 games.
But then in the 8th inning when someone is out by a mile he'll come out and instantly call for the review without looking back at the dugout, thus wasting it.