For Trevor Cahill, this loss represented a small step forward.Arizona Diamondbacks' Trevor Cahill throws a pitch against the San Francisco Giants during the first inning of a baseball game, Wednesday, April 2, 2014, in Phoenix.Arizona Diamondbacks' Trevor Cahill, right, jumps off of first base after getting San Francisco Giants' Brandon Belt (9) out during the first inning of a baseball game, Wednesday, April 2, 2014, in Phoenix.Arizona Diamondbacks' Trevor Cahill stretches his neck as he paces the dugout during the fifth inning of a baseball game against the San Francisco Giants, Wednesday, April 2, 2014, in Phoenix.