CHELTENHAM, UK -- Look to the stars. A reflex action for Sean Flanagan as he passed the post in front on Marine Nationale (Ire) (French Navy {GB}) to win the G1 BetMGM Queen Mother Champion Chase. Any win at Cheltenham is emotional for those closest to the horse, but this was one heavily laced with poignancy, coming less than a month after the death of Marine Nationale's former jockey Michael O'Sullivan at the age of 24. Two years earlier, Marine Nationale had provided him with his first victory at the...