No one is quantifying 5 or 10 games, but even if it can't be causally linked to losses to your satisfaction, it may have played a big part in some losses. We have had few games where base running gaffes have cost us a couple of runs. In some of those games, we were blown out, but that doesn't mean that the base running gaffes didn't contribute to the loss. If we are down 1 or 2 runs in the 7th inning, the manager will not go to his top shut down relievers and the other team may open up a bigger lead, and that would never have happened if we were tied or ahead going into the 7th inning. I guess this type situation of doesn't factor into your calculations. Your position is untenable as you say, because fundamentally sound base running is coached, because that is good baseball, and good baseball gives you the best chance of winning. If it doesn't cost us at the end of the season, great for us, but they shouldn't be making these base running gaffes on such a regular basis.