Shishkin odds-on Grade 2 Chase at Doncaster By Andrew Atkinson Nicky Henderson trained Shishkin (1.30) is 2-7 odds-on to win the Grade 2 Lightning Novices’ Chase over 2 miles under Nico de Boinville at Doncaster on Saturday. The Grade 2 Doncaster heat is Shiskin’s prep-run ahead of the Sporting Life Arkle at the Cheltenham Festival in March. The seven racecard meeting gets underway in a 2m 4f Class 4 Handicap Hurdle with Lifeisahighway (12.55) tipped each-way by fromthehorsesmouth.info. Trained by Ben Pauling and ridden by Nico de Boinville, seven-year-old Lifeisahighway (14-1) ran fourth of 15 on soft going in December. Continuing with value for money, Nicky Henderson duo Floressa (15-8) and Marie’s Rock (9-4) are overlooked in the Grade 2, C1 Mares Hurdle over 2m, in preference to fromthehorsesmouth.info ew selection Phil Kirby trained Rayna’s World (2.05) (10-1) ridden by Ross Chapman.