GI Kentucky Derby hero Authentic (Into Mischief) and GI Kentucky Oaks victress Shedaresthedevil (Daredevil) both returned to the worktab Saturday at Churchill Downs. GI Preakness S.-bound Authentic covered five panels in :59.20, the fastest of 38 works at the distance. With jockey Martin Garcia aboard, the bay clicked off splits in :23.80 and :35.40, galloping out six furlongs in 1:12.20. "It went very well. Martin has been with me," said trainer Bob Baffert, who came to Louisville from the Keeneland Sale in Lexington. "He knows what I expect. I told...