His other major winners have included Lord Windermere, Rock On Ruby, Oscar Whisky Paisley Park and Big Zeb.
On 18 January Lisnagar Oscar started favourite for a minor event at Chepstow in which he was ridden by Sean Bowen and recorded his first success under rules as he took the lead at the second last obstacle and held off the challenge of Dickie Diver to prevail by a head.
[8] Bowen was again in the saddle when the gelding started at odds of 6/1 for the Grade 2 Prestige Novices' Hurdle over three miles at Haydock Park on 16 February.
After tracking the front-running Ask Ben, Lisnagar Oscar gained the advantage at the penultimate flight of hurdles and drew away to win by ten lengths despite being eased down in the closing stages.
[9] For his last two races of the season Lisnagar Oscar moved up to the highest class to compete in Grade 1 events and acquitted himself well despite failing to win.
He made his debut over the bigger obstacles at Chepstow on 11 October when he started favourite but was beaten a neck Ardlethen after failing to recover from a mistake at the final fence.
The gelding went off the 4/6 favourite at Stratford Racecourse three weeks later but after tracking the front-running winner Black Op he made a jumping error at the third last and then faded badly to come home third, beaten more than thirty-three lengths.
Two weeks later he started a 50/1 outsider for the Grade 2 Cleeve Hurdle at Cheltenham and produced a much improved performance to take third place behind Paisley Park and Summerville Boy.
"[14] At Wetherby Racecourse on 31 October Lisnagar Oscar made his first appearance since this Stayers' Hurdle win, Lisnagar Oscar carried top weight of 160 pounds in the Grade 2 West Yorkshire Hurdle in which he took the lead approaching the second last before fading in the closing stages and finishing fourth behind the mare Roksana.
[15] In the Rendlesham Hurdle at Haydock in January Lisnagar Oscar produced a better effort, taking the lead at the eighth flight and then rallying after being overtaken by Third Wind at the last to finish second by three quarters of a length.