Watching the highlights from some tennis game on Sports Center just now. After each play, the ball is done and a guy sprints along the net to pick it up. There's sometimes 2 guys facing each direction.
I don't know much about it, but what I do see is guys working as fast runners. I would guess that their paycheck is probably higher than the average post-college sprinter.
Anyone ever do this? Anyone ever apply? Do sprinters do well? Tennis guys? Soccer guys? What's the position even called?