since we are determining this by edict, I have experienced momentum shifts in darts, foosball, billiards, horseshoes, poker, golf, tiddly-winks, quarters, and pong (of the video and ping varieties). I have witnessed it in tennis, hockey, soccer, Australian rules football, hurling and curling. so why does it exist in just about everything but baseball? I have experience momentum not happening in all those things except tiddly winks becuase I wasn't born in the 50s. Momentum as its been defined in this thread cannot be refuted. If a player carries over something from the past he had momentum and that's why he did it. If a player didn't carry it over, then there wasn't enough momentum to outweigh random chance and talent. We can't possibly refute you who say momentum is real and exists in baseball because it only exists when you have defined it to exist.