San Diego Padres' Chris Denorfia, left, slides in safely on a triple against the San Francisco Giants in the first inning of a baseball game on Friday, April 18, 2014, in San Diego. (AP Photo/Don Boomer)
San Francisco Giants starting pitcher Matt Cain takes a moment to get up after slipping on the mound after delivering a pitch in the first inning of a baseball game against the San Diego Padres, Friday, April 18, 2014, in San Diego. (AP Photo/Don Boomer)
San Francisco Giants starting pitcher Matt Cain delivers in the first inning of a baseball game against the San Diego Padres, Friday, April 18, 2014, in San Diego. (AP Photo/Don Boomer)
San Diego Padres starting pitcher Tyson Ross delivers in the first inning of a baseball game against the San Francisco Giants, Friday, April 18, 2014, in San Diego. (AP Photo/Don Boomer)