(Reuters) - Roberto Castro fired a sizzling opening round of 10-under-par 62 to lead the PGA Tour's Sanderson Farms Championship by two strokes in Jackson, Mississipi on Thursday. Tied for second were fellow American Bryce Molder and Australian Aaron Baddeley, who both carded 64s, one stroke better than Englishman Brian Davis and Canadian Adam Hadwin. Bunched at six-under 66 were Canadian Graham DeLaet, Andres Romero of Argentina, Venezuela's Jhonattan Vegas and Americans Andrew Loupe and Michael Kim. More...