ARLINGTON -- Pat Burrell's hitting struggles prompted multiple changes in the Giants' lineup for Sunday's Game 4 of the World Series.

Manager Bruce Bochy removed Burrell from left field, probably for just one game. Nate Schierholtz occupied right field in his first postseason start, with Cody Ross moving to left.

Aubrey Huff replaced Pablo Sandoval as San Francisco's designated hitter. Travis Ishikawa also received his initial postseason start by stepping in for Huff at first base.

Given Bochy's characteristic faith in veteran players, Burrell seemed to have a chance to stay in the lineup. But Burrell's .158 postseason average (6-for-38, with 19 strikeouts), including an 0-for-9, eight-strikeout showing in the Series, prompted Bochy to make the switch.

"It's fair to say he's not seeing the ball. His timing's off," Bochy said.

Bochy added that with left-hander Cliff Lee starting Monday's Game 5, the right-handed-swinging Burrell will likely return to the lineup that night.

Bochy noted that Huff gives the Giants a "legitimate" DH, and he delivered a two-run homer in the third inning that helped the Giants to a 4-0 win and a 3-1 World Series lead. Having spent most of his previous 10 seasons in the American League, Huff had performed DH duties in 406 games, batting .278 with an .817 OPS, 69 home runs and 242 RBIs.

Bochy said that Sandoval, who was 0-for-3 as San Francisco's DH on Saturday, will be relegated to pinch-hitting duty.

The presence of Schierholtz and Ishikawa in the lineup likely gave the Giants their best defensive alignment, though Bochy said that was a "secondary" priority. Bochy has used both of them all season as late-inning replacements, as their ratios of appearances to at-bats reflect. Ishikawa played in 116 regular-season games, while accumulating just 158 at-bats; Schierholtz appeared in 137 games and totaled 227 at-bats.

"When they've come in the game, I like the at-bats they've given us," Bochy said of Schierholtz and Ishikawa.

In Sunday's win, Schierholtz went 0-for-5 and Ishikawa went 0-for-3 with a walk.

Bochy stays the course on handling rotation

ARLINGTON -- Though Jonathan Sanchez is no longer sure to start Game 7 of the World Series if the Giants-Rangers showdown lasts that long, manager Bruce Bochy said on Sunday that this uncertainty wouldn't affect how he handles San Francisco's pitchers in the next few games.

With Sanchez showing signs of fatigue in his Game 3 start, the Giants could have been expected to monitor pitch counts to keep pitchers fresh as much as possible -- partly to save them for potential use in a possible Game 7 next Thursday at AT&T Park. But Bochy feels differently.

"I don't think you can change how you manage," said Bochy. "You manage to win the game you're playing and worry about tomorrow, tomorrow -- or Game 7, if that would happen."

Bochy added that relievers Guillermo Mota and Jeremy Affeldt, who each pitched 1 1/3 shutout innings on Saturday, would be available on Sunday for abbreviated duty.

San Francisco's 4-0 win over the Rangers on Sunday night put them in position to win the World Series in Monday's Game 5.