This mystery show jumper is currently one of the best, but these photos depict an incident that happened earlier in his career.  He was on his way to a clear round when a Jack Russell terrier started chasing him and bit his horse at the second-to-last fence.  He was allowed to restart, but knocked the last fence down.   Send your guess of who this rider could be to webmaster@chronofhorse.com and you might win a prize!

And the winner is Mary Jo Hoepner!  She was the first to correctly guess McLain Ward.  Thank you to everyone who submitted an answer.  Check back frequently for our next Guess Who?