SAN DIEGO -- If it weren't for the third inning Friday night, the Padres would've been in a one-run game with the division-leading Giants heading to the bottom of the ninth.
But that third inning was very real, very long and very productive -- at least for the Giants, who tallied eight runs on eight hits, two walks and an error in an inning that doomed the Padres in a 10-1 loss at Petco Park on Friday night.
"The story of the game tonight is the eight-run inning," Padres manager Bud Black said. "With [Giants starter Matt] Cain against you, when you give up an eight-spot, that's not a good combination."
Seven of the first eight batters to come to the plate that inning reached base, a streak that forced Padres starter Ross Ohlendorf from the game. Righty Miles Mikolas relieved him and didn't fare much better, allowing three more hits -- including one to Cain -- and another run before retiring Marco Scutaro to finally end the Giants' onslaught.
"[That inning] was obviously really disappointing," Ohlendorf said. "I gave up a lot of hits on off-speed pitches. I was throwing to hittable locations in counts where I needed to make better pitches."
Scutaro had clubbed a solo homer in the first inning, however, meaning that by the time all the fireworks were finished in the third, the Padres were trailing 9-0 and facing a cruising Cain.
"He throws a lot of strikes," Padres catcher Yasmani Grandal, who was 0-for-3 in his first game back from a DL stint with strained right oblique, said. "He has four pitches he can throw for a strike. ... It seemed like he made every pitch look good."
The Giants righty did not allow a hit until the fifth, when Yonder Alonso hit his 32nd double of the year and scored on an Everth Cabrera single to get the Padres on the board. Alonso's 32 two-baggers are tops among all Major League rookies.
But that's where San Diego's scoring would end, as a sixth-inning Chase Headley double and an eighth-inning Chris Denorfia triple were the only other Padres hits.
One bright spot for the Padres was the defense of Logan Forsythe, who made two great plays -- one at second base and one after moving to third in a defensive switch. The first gem came on a Hunter Pence ground ball up the middle. Forsythe ranged deep into the infield behind second base, laid out to stop the ball and then popped up to get the speedy Pence by a half a step. The second play came when he leaped to knock down a Cain line drive and recovered to fire from deep in the third-base hole to get the out.
"Great plays, at second base especially," Black said. "The play at third was a good reaction play ... made a strong throw to get the pitcher, not real fleet of foot, but still, nonetheless a great play."
But the stellar defensive versatility of Forsythe wasn't enough to stop the Giants, who added a run in the ninth to up the lead to 10-1. Those 10 runs came on a combined 15 hits, the most the Padres have allowed all season. Every player in the Giants' order had at least one hit, and Scutaro, Pence, Gregor Blanco and Brandon Crawford each had two hits apiece. Leadoff man Angel Pagan had three hits and two RBIs to pace the Giants' attack as it handed the Padres their fourth straight loss.
Those losses haven't been pretty. In what is the Padres' first four-game losing streak since they lost their last game before the All-Star break and the first three after it, the Padres have lost all four games by five or more runs. They have been outscored 28-2 and outhit 44-20 over that span, and San Diego starters are averaging just over four innings per outing during the streak.
"Over 162 games, six months, you're going to have stretches where these things happen," Black said. "You try everything you can between starts for the starters to try to get them out of a funk, but you realize that these things do happen over the course of a season. ... But we need a couple good outings."
Chelsea Janes is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.