SAN FRANCISCO -- Barry Zito and Matt Cain are polar opposites.

Zito, a lefty, doesn't overpower you with his fastball, but his signature curveball will tie you in knots. Cain, a righty, can blow his fastball right by you.

Different pitchers for sure, but they got similar results against the D-backs this weekend.

One day after Zito was masterful against Arizona, Cain dominated in a 2-1 victory on Sunday afternoon that gave San Francisco a sweep of the three-game series at AT&T Park.

Cain (1-1) allowed a single to Eric Byrnes to start the game and one to lead off the ninth. In between, he held the D-backs hitless.

"This is the type of guy that goes right at you," Byrnes said of Cain. "He's got great late life to his ball, so he can get away with making mistakes up in the zone. What you'll get is a lot of popups and foul balls and fly balls, and that's what he did today."

The loss was the fourth in a row for the D-backs, who have dropped six of seven and scored a total of three runs in the series with the Giants.

"Sometimes you have to tip your cap to the pitchers and realize that they've thrown some really good games," Byrnes said.

In that case, make sure you doff your hat in the direction of D-backs starter Yusmeiro Petit, who had the misfortune of starting against Cain.

The right-hander, who was recalled prior to the game to start in place of the injured Micah Owings, allowed just two runs over seven innings. Both of the tallies came via the home run, with Pedro Feliz hitting one in the third and Barry Bonds connecting on the 740th of his career in the fourth.

Both long balls came on changeups.

"[Petit] did everything he needed to do," catcher Chris Snyder said. "The pitch to Bonds he left over the plate a little bit. That was probably the only mistake that he made. I wouldn't say that he made a mistake to Feliz, because that was more of a bad call on my part rather than him making a bad pitch."

Petit's stay in the big leagues will likely be short, with Randy Johnson scheduled to be activated in time to start Tuesday's game with the Padres, but he definitely made an impression on his teammates.

"He pitched great," manager Bob Melvin said. "[He] had a good changeup, had a good feel for when guys were looking to pull or go the other way."

Petit was acquired in a late-spring trade with the Marlins in exchange for reliever Jorge Julio. Petit's fastball topped out in the mid-80s on Sunday, but the way he uses his offspeed stuff doesn't allow hitters to sit on his heater.

"A guy like that shows you that you don't have to throw 95 [mph] to get hitters out if you can locate and use your offspeed pitches," Giants manager Bruce Bochy said.

The D-backs never threatened Cain until the ninth, when Byrnes and Alberto Callaspo led off with singles to put runners at first and third.

That brought the club's leading hitter, second baseman Orlando Hudson, to the plate. Cain got Hudson to hit a grounder to second that the Giants turned into a double play, with Byrnes scoring on the play.

"We had him on the ropes there at the end and couldn't put him away," Melvin said. "We had a shot there. We had our best hitter at the plate, we had first and third, and he ends up getting a double-play ball."

Chad Tracy then fell behind, 0-2, but battled back to draw a walk. The D-backs still had life, but second baseman Ray Durham made a diving stop on first baseman Tony Clark's grounder to end the game.

"It was nice to see us come back at the end, though. It's some momentum for us to build off once we get going back home Tuesday," Byrnes said.

The D-backs will take Monday off, but things don't get any easier for them, as they are scheduled to face David Wells, Jake Peavy and Chris Young in a three-game set with the Padres. Then the Giants come rolling into town, and it'll be Zito, Cain and Matt Morris.

"We've run into some pretty tough pitching," first baseman Conor Jackson said. "[We] ran into some guys who were throwing the ball well. This is how our division is going to be. There's a lot of good pitching, so there's going to be a lot of close games."