It was one pitch that encapsulated everything the Giants hoped to see this spring.Closer Brian Wilson fired a cutter past Seattledesignated hitter Vinnie Catricala for strike three. Buster Posey caught the ball, leaped from hiscrouch and threw out Carlos Peguero trying to steal second base. Wilson's 2012 debut Sunday was just as satisfying as Posey's twodays before. With his elbow injury a distant memory, Wilson pitchedthe fourth inning of a 7-5 Giants victory and retired the sideon nine pitches, all fastballs and cutters.