Mars has Doncaster option 2013 Derby favourite Mars features among 107 entries for the £75,000 One Call Insurance Champagne Stakes at Doncaster. Aidan O'Brien's charge won by five lengths on his racecourse debut at Dundalk and typically his trainer has a strong hand here with the likes of Cristoforo Columbo and promising maiden winners Nevis and The United States also entered. The entries for the seven-furlong race include David Simcock's Birdman, who was beaten a head by Olympic Glory in the Group Two 32Red.com Superlative Stakes on his most recent start at Newmarket.