It's not easy chasing down balls, especially on clay. (YouTube)

Last week at the Barcelona Open, the cameras rolled as a ball boy suffered a painful interaction with the back wall. All seemed to be going according to plan, until suddenly, it was not:

Ball persons' jobs are to keep play running smoothly while never calling attention to themselves. They exist as a critical yet silent cog to the game, but sometimes it can't be helped. To this boy's credit, he did his absolute best to pretend nothing happened.