Kauto Star, trained by Paul Nicholls and ridden by Ruby Walsh, has won the JNwine.com Champion Chase at Down Royal.
The former Howard Johnson-trained Killyglen helped forced the early pace with China Rock never far behind.
Mossbank, off the track for 927 days, loomed up large half a mile out but not surprisingly his absence eventually took its toll.
With the race hotting up, last season’s Arkle winner Sizing Europe looked a huge threat to Kauto Star but try as Andrew Lynch might, he could never quite get on terms with the four-times King George winner.
Kauto Star looked to be idling a little after the last but he was kept up to his work to beat Sizing Europe by four lengths with a neck back to China Rock.