Madison Bumgarner became San Francisco's most steady starter last season, and now he is stumbling through the season's first month.San Francisco Giants' Michael Morse, center, gets a pat on the shoulder from first base coach Roberto Kelly, next to San Diego Padres first baseman Tommy Medica, after Morse's two-run single during the fourth inning of a baseball game Monday, April 28, 2014, in San Francisco.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.San Francisco Giants' Michael Morse follows through on a two-run single against the San Diego Padres during the fourth inning of a baseball game Monday, April 28, 2014, in San Francisco.San Francisco Giants' Hunter Pence slides in safely into third base with an RBI triple during the fourth inning of a baseball game against the San Diego Padres on Monday, April 28, 2014, in San Francisco.