The Rockies ballboy brought the stool he was sitting on with him and tried to use it like a glove to stop the foul line drive hit by SF Giants batter Guillermo Quiroz. Naturally it didn't work, as the ball went under the stool and bounced off a wall into left field.
The Rockies ballboy may have used the stool to protect himself from getting hurt, since he didn't have a glove. That, of course, begs the question of why the ballboy have a glove? You would think that would be required equipment for his job.
Video via MLB.