The Miami Marlins defeated the Baltimore Orioles 4-3 on Thursday on a walk off error from Orioles third baseman Coby Mayo as the winning run was scored by Joe Mack . But despite winning the game, there was something that stood out that will not make Marlins fans happy. Young outfielder Jakob Marsee struggled again and his slash line continues to dip with each passing game. The youngster is now hitting .176/.293/.254 on the season and those numbers are quite ugly. He had a chance to win the game for his team in the ninth inning but struck out with a runner on second base. There is still a lot of time left in the season but Marsee is struggling in a way the Marlins didn't expect. But if these struggles were to continue, Marsee could see himself optioned just like Graham Pauley was when he was struggling too.…