Sleepy exercise rider

[ninetoone]

"Trainer Bill Kaplan had planned to work Imawildandcrazyguy when the track opened at 5:30 a.m. But the exercise rider he has been using in New York overslept so Kaplan got jockey Javier Castellano to work the gelding."

The article went on to say, "While Kaplan’s exercise rider was sleeping, jockey Mike Smith was just arriving in New York after taking a red-eye flight from Southern California. Smith made the cross-country trek to work Tiago, the Santa Anita Derby winner and seventh-place finisher in the Kentucky Derby."

Pretty funny, I thought. Has a jock ever lost a mount like this? What kind of hours do the jocks put in on an average day?