St. Louis, MO -- (Sports Network) - Todd Wellemeyer threw 7 1/3 innings to help the St. Louis Cardinals take a 5-2 win over the San Francisco Giants and split a four-game series.

Wellemeyer (7-7) scattered seven hits and two runs with a walk and six strikeouts for the Cardinals, who won the final two games of the series. Ryan Ludwick drove in two runs while Brendan Ryan scored twice.

"Just one consistent delivery to where the ball looked the same," Wellemeyer said of his key to success. "Every pitch looks the same out of your hand, every delivery looks the same. That's how you get them off-balance."

Barry Zito (4-8) was tagged for all five runs on five hits with three walks and seven strikeouts in just 4 1/3 innings for the Giants, who have lost two straight on the heels of a three-game winning streak. Aaron Rowand hit a two- run homer to account for the offense.

The Cardinals got all the runs they needed in the opening inning. The first three batters reached safely to load the bases and Ludwick beat out an infield single to chase home Ryan. Yadier Molina then worked a walk to force home Skip Schumaker and Chris Duncan hit into a fielder's choice that scored Albert Pujols for a 3-0 lead.

San Francisco had baserunners in each of the first five innings, but only got a man to second twice, in the first and third innings.

St. Louis padded its lead in the fifth. With men on second and third, Schumaker grounded out to bring home Colby Rasmus. Later in the frame, an RBI single from Ludwick brought home Ryan for a 5-0 advantage.

"Everything they hit fell in, similar to the first two games for us," said Giants manager Bruce Bochy. "We didn't play well defensively the last two days either. We made some mistakes we haven't been doing."

The Giants got on the board in the eighth to spoil Wellemeyer's shutout bid. Pinch-hitter Nate Schierholtz led off with a single and Rowand followed with a shot that just cleared the wall in left for his ninth home run to make it a 5-2 game.

Ryan Franklin, though, shut down San Francisco in order in the ninth to grab his 19th save of the season.

Game Notes

St. Louis hits the road and starts a three-game set in Cincinnati on Friday...San Francisco returns home to start a three-game series in Houston on Friday...The Giants took four of the seven games against St. Louis this season and have won the series the past three seasons...Before the game, St. Louis agreed to terms with 16-year-old outfielder Wagner Mateo. He is considered to be the top amateur free agent on the market from Latin America this year.