We understand the role of ball boys/girls when it comes to protecting bullpens from foul balls, and occasionally they make highlight plays. But they sure do screw up a bunch, and today a ball girl in Baltimore committed the ultimate sin by ignoring the third base umpire's fair signal and fielding a live baseball as Blue Jays runners headed toward the plate.

Click here to view this m.mlb.com embed.

It's debatable that Adam Lind would have scored on the play—and he ended up reaching the plate on a grounder later anyway—but, yeesh, train your employees a bit better, O's. (The cynic would say the team trained its employee very, very well.)

[RSN]