SAN FRANCISCO — Right-hander Jack Flaherty returns to the scene of his major league debut last September when he closes out a four-game series for the St. Louis Cardinals against the San Francisco Giants on Sunday afternoon.

Flaherty (3-4 [url=http://www.buccaneersauthorizedshops.com]Buccaneers Game Jerseys[/url] , 3.19 ERA) will attempt not only to give the Cardinals a 3-1 win in the four-game series but to reward manager Mike Matheny with his fifth series win in seven return visits to San Francisco, where he played the final two years of his career.

Matheny has never lost a series as a manager in San Francisco, winning four and tying the other two. He is assured of at least a tie in this one as well, with the Cardinals having posted 11-2 and 3-2 wins sandwiching a 3-2 loss on Friday night.

Flaherty was just 21 years old when he debuted for the Cardinals last Sept. 1 in an 11-6 win in San Francisco.

He did not get credit for the win, going only four innings, during which he was roughed up for five runs and eight hits. He’s thus 0-0 with an 11.25 ERA against the Giants.

Brandon Crawford doubled and homered against Flaherty, and Hunter Pence lashed a two-run triple.

The California native will be seeking to snap a two-game losing streak. He has allowed eight runs and 10 hits in 10 innings in losses to Cleveland and Arizona.

Flaherty will be backed by a Cardinals defense that has been superb against the Giants, having committed just one error in the three games. That lone miscue was an errant throw by backup catcher Francisco Pena on a steal attempt.

“That’s kind of the initiative we have going on right now: bolstering our defense,” Matheny noted Saturday. “Let’s play a cleaner defensive game. And then hope that we get contributions offensively. Let’s figure out ways to make sure we’re catching the ball to help reinforce the great starts that we’ve been getting.”

Luke Weaver, John Gant and Carlos Martinez have provided that pitching in San Francisco. The Giants have totaled just seven runs in the series, extending to six games their streak of scoring three or fewer.

Martinez even contributed an RBI double to Saturday’s win.

The Giants have hit a cumulative .167 in their last six games, five of which they’ve lost.

San Francisco will be counting on ace Madison Bumgarner (1-3, 2.58) to contribute both on the mound and at the plate in the series finale.

The Giants have supported their pitching leader with just 14 runs in his six starts. He hasn’t helped his own cause; the slugger with 17 career homers has gone 0-for-14 so far this season.

The left-hander has pitched brilliantly in his last three starts, allowing just three runs (two of which were earned) and 12 hits in 21 innings.

Bumgarner often has not been at his best against the Cardinals in his career [url=http://www.titansauthorizedshops.com]Titans Game Jerseys[/url] , going 3-5 with a 4.38 ERA in eight starts. He hasn’t beaten St. Louis since 2014.

One player who has never figured out Bumgarner is Kolten Wong, who has been the big hitter in the series with six hits, including a double and a triple, and two RBIs.

He’s 0-for-9 with two strikeouts in his career against Bumgarner.

In games where the St. Louis Cardinals hit homers and pitch well, they generally walk off the field with a win.

But on nights where they can’t connect with the long ball, they don’t consistently make up for it with situational hitting or defense. Friday night’s 5-1 loss to the Atlanta Braves was another example of that trend rearing its ugly head.

After failing to cash in leadoff walks in the bottom of the first against Braves starter Julio Teheran, St. Louis simply couldn’t crack the code. It eventually caught up with the Cardinals as they were held to one run for their second straight game.

For St. Louis (42-38) to even the series Saturday night at Busch Stadium, the Cardinals will have to do a better job of converting runners in scoring position into runs while not giving up extra outs defensively. The Cardinals’ three errors Friday night marked their 17th multi-error game in 80 games.

St. Louis is on a pace to commit more than 130 miscues this year, continuing a three-season trend of below-average defense. Permitting good teams like Atlanta (46-34) four or five outs in an inning is a recipe for disaster.

The Braves started a 10-game road trip with a positive result. Third baseman Johan Camargo was the offensive star, going 3-for-5 with two runs and a two-run double off Jordan Hicks in the eighth that broke open a 1-0 game.

“Baseball is all about its ups and downs,” Camargo said. “For me, it’s all about maintaining the focus and just staying the path.”

Atlanta essentially heeded Camargo’s credo, bouncing back from consecutive series losses against last-place teams Baltimore and Cincinnati. It will turn to left-hander Max Fried (0-2, 4.09 ERA) on Saturday to secure a series win.

Fried is replacing veteran right-hander Brandon McCarthy [url=http://www.redskinsauthorizedshops.com]Redskins Game Jerseys[/url] , who was put on the 10-day disabled list Thursday with a knee injury. A former first-round pick of San Diego, Fried will make his first start since going five innings and giving up one earned run on May 28 in a no-decision against the New York Mets.

It will be the second career appearance against the Cardinals for Fried, who last year tossed a scoreless inning in relief against them.

Right-hander Luke Weaver (4-6, 4.59) will look for his second straight win for St. Louis. Weaver shrugged off a rough first inning Sunday in Milwaukee to grab an 8-2 win, fanning a season-high nine over 5 2/3 innings while yielding two runs off five hits and two walks.

Weaver needed 32 pitches to make it through a two-run first inning, but started finding the range with his off-speed pitches. That made his fastball play bigger, and he rolled through the middle innings while the Cardinals bombed Jhoulys Chacin out of the box with five runs in the fourth and two more in the fifth.

“The first inning, it was like, ‘Here we go again.’ It means a lot for him to right the ship,” St. Louis manager Mike Matheny told mlb.com.

Weaver, who snapped a seven-start winless streak in Milwaukee, will make his first career appearance against the Braves.