ARLINGTON HEIGHTS, Ill. &ndash; Trainer Larry Rivelli unveiled his second impressive 2&#45;year&#45;old debut winner by Shackleford at this meet when Wellabled romped to victory in the first race Saturday. Granted, he made the lead over a main track that was kind to early speed all last week, but Wellabled still impressed, turning back an upper&#45;stretch challenge from Godolphin first&#45;timer Guernsey to win by 7 1/2 lengths. He ran five furlongs in 57.68 seconds and got a 78 Beyer Speed Figure.&ldquo;That horse has been the best 2&#45;year&#45;old I&rsquo;ve had all year,&rdquo; said Rivelli, who trains Wellabled for Carolyn Wilson. &ldquo;I never do this, but I was considering running him in a stakes first out, but we decided to run him once at home just to make sure what we had.&rdquo;Rivelli said Wellabled will be shipped to Saratoga to start in the Saratoga Special on Aug. 14. The Rivelli&#45;trained Shackin Up, a 2&#45;year&#45;old Shackleford filly, won her debut by almost nine lengths May 28 but bucked shins not long afterward and has been turned out. She&rsquo;s not likely to race again until the fall, Rivelli said.Rivelli said he&rsquo;d enter Cocked and Loaded for Saturday&rsquo;s Indiana Derby, but Cocked and Loaded isn&rsquo;t a certain starter there and will also be considered for the Curlin Stakes at Saratoga on July 29. Cocked and Loaded most recently finished fourth in the Ohio Derby.