Saturday horse racing tips: Four best bets from Dave Nevison

Dr Kanaga is from the family of 1996 Grand National runner-up Encore Un Peu. Dr Kanagaga won three chases last season. Elvis Mail won over fences on his reappearance at Ayr last time under a conditional rider. Nick Alexander has won the last two runnings of the Becher Chase. Clan Legend is bidding for the hat trick. Walking On Air is a short-priced, lightly raced Nicky Henderson runner in the closing handicap. Benson looks booked for a place judged on the efforts so far this season and is in excellent form. The Becer Chase takes place at the Aintree Racecourse on Saturday.

Dave Nevison's best bets for Saturday's race at Sandown are Revels Hill, who ran second in a 2½ mile race as a warm-up for this assignment.