Bob Baffert's formidable GI Kentucky Derby line-up had continued to dwindle along this extended Triple Crown trail--with one of his entries even scratching in the paddock Saturday--but the last colt standing, Authentic (Into Mischief), provided the Hall of Fame conditioner with a record-tying sixth trophy in the "Run for the Roses." Odds-on favorite Tiz the Law (Constitution) ranged up to challenge the winner, but was repelled, and settled for second, beaten 1 1/4 lengths. Huge longshot Mr. Big News (Giant's Causeway) was this year's trifecta crasher, while second choice Honor...