The 6-foot-5, 200-pound Walker doubles as an elite basketball player, averaging 21 points and 15 rebounds per game as a forward last season. He has great leaping ability, and his dunks on the court have made him into a local folk hero. As a junior, Walker pitched little but did play shortstop next to Diamondbacks supplemental first-rounder Matt Davidson, a third baseman. Obviously uncomfortable and ill-suited for the infield, Walker has since concentrated on pitching. Walker was terrific in a stint for the Angels Elite scout team in the fall of 2009, but since then he has been more erratic. His outings in the early part of this season were rocky, probably due to the transition from basketball to baseball. In later starts, Walker would start strongly and then struggle as a game went on. When right, Walker fires a 91-93 mph fastball that can touch 95, and adds a slider and curve. His whippy three-quarters arm action can be free and easy on some occasions, restricted and stiff on others. Scouts agree that Walker, who hasn't committed to a college yet, is a long-range project as a pitcher, but his combination of sparkling athletic ability, raw stuff and imposing build may make Walker a gamble worth taking.