It's not often that you get to go head-to-head with your coach, so imagine the thrill when Paige Johnson not only won her first big Winter Equestrian Festival (Fla.) grand prix under the lights, but also did it by defeating her trainer, Kent Farrington. 

Farrington acknowledged that his horse is on the green side, so he didn't put the gas pedal down as hard as he could have, but the margin was still just fractions of a second...