Atlanta Braves' Jason Heyward ducks an inside pitch from San Francisco Giants pitcher Madison Bumgarner during the first inning of a baseball game on Sunday, May 4, 2014, in Atlanta. (AP Photo/David Tulis)
San Francisco Giants starting pitcher Madison Bumgarner delivers to the Atlanta Braves during the first inning of a baseball game on Sunday, May 4, 2014, in Atlanta. (AP Photo/David Tulis)
San Francisco Giants' Brandon Crawford, right, is congratulated on his solo home run by teammate Madison Bumgarner during the fourth inning of a baseball game on Sunday, May 4, 2014, in Atlanta. (AP Photo/David Tulis)
San Francisco Giants starting pitcher Madison Bumgarner throws to the San Diego Padres during the first inning of a baseball game Monday, April 28, 2014, in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants starting pitcher Madison Bumgarner throws to the San Diego Padres during the first inning of a baseball game on Monday, April 28, 2014, in San Francisco. (AP Photo/Marcio Jose Sanchez)
San Francisco Giants starting pitcher Madison Bumgarner throws during the first inning of a baseball game, Tuesday, April 22, 2014, in Denver. (AP Photo/Barry Gutierrez)
San Francisco Giants starting pitcher Madison Bumgarner throws during the first inning of a baseball game, Tuesday, April 22, 2014, in Denver. (AP Photo/Barry Gutierrez)
San Francisco Giants pitcher Madison Bumgarner throws against the Los Angeles Dodgers during the first inning of a baseball game in San Francisco, Thursday, April 17, 2014. (AP Photo/Jeff Chiu)
Los Angeles Dodgers' Tim Federowicz hits an RBI single off San Francisco Giants pitcher Madison Bumgarner during the second inning of a baseball game in San Francisco, Thursday, April 17, 2014. (AP Photo/Jeff Chiu)