Irish hurdler Solerina fell for the first time in her career - leaving Emotional Moment to score at Navan.
Solerina was kept back in third spot as she stepped up to a three-mile trip for only the the second time in her career.
But she crashed out at the final flight on the first circuit of the McCabe Builders Ltd Boyne Hurdle.
The fall left Barry Geraghty free to send 8-11 favourite Emotional Moment clear, and cruise to a nine-length win with Yogi back in second.
Bookmakers William Hill reacted by cutting the winner to 10-1 from 16-1 for the World Hurdle at next month's Cheltenham Festival.