The perils of baseball's new replay rule figured prominently in the Arizona Diamondbacks' 5-4 victory over the San Francisco Giants Tuesday night.Arizona Diamondbacks starting pitcher Wade Miley (36) throws in the first inning against the San Francisco Giants during a baseball game, Tuesday, April 1, 2014, in Phoenix.San Francisco Giants starting pitcher Matt Cain (18) talks to home plate umpire Eric Cooper (56) after Cain thought he tagged out a runner at home in the fourth inning during a baseball game, Tuesday, April 1, 2014, in Phoenix.MLB umpires Pat Hoberg (20) and Chris Guccione review a play challenged by San Francisco Giants manager Bruce Bochy (15) in the fourth inning during a baseball game against the Arizona Diamondbacks, Tuesday, April 1, 2014, in Phoenix.San Francisco Giants starting pitcher Matt Cain (18) throws in the first inning during a baseball game against the Arizona Diamondbacks, Tuesday, April 1, 2014, in Phoenix.