Manton Thoroughbreds' hitherto undefeated 2-year-old colt Isaac Shelby (GB) (Night Of Thunder {Ire}--Kentucky Belle {Ire}), by Heliostatic {Ire}) registered a taking 3 1/2-length success in his May 31 unveiling going 6 1/2 furlongs at Newbury, the chestnut's only prior start, and doubled up in game fashion after a ding-dong tussle with Godolphin's Victory Dance (Ire) (Dubawi {Ire}) throughout the closing stages of Saturday's seven-furlong G2 bet365 Superlative S. at Newmarket. The 3-1 chance was the sharpest of five into stride and accepted a tow from Dark Thirty (Ire) (Starspangledbanner {Aus})...