Yes.
Baseball, Hockey, Soccer, and Tennis are probably 4 of the 5 easiest sports to win at (NFL being the other one).
Did nothing but fish for half points in CBB, CFB, and NBA using Pinny dynamics in addition to bet RL's (99% +1.5's) in MLB and just couldn't win in those fields.
Tracked about 1000 of my picks in those sports and realized that's where I was giving a good chunk of my profit back.