Arraez (head) is starting at second base and batting second Tuesday against the Mets.

Arraez was held out of Sunday's starting nine after being struck in the head by an errant warmup throw Saturday, but he's good to go after Monday's team off day. The infielder has a .333/.375/.400 slash line through 12 games in September and has gone 7-for-17 over his past four contests.

Busch went 1-for-5 with a solo home run in Monday's 4-0 win over the Pirates.

Busch is now riding a five-game hitting streak, and he's gone deep twice during the stretch. The Chicago first baseman has already set a new career high with 28 long balls this season. Busch has also tallied a career-best 79 RBI, and he's established himself as a reliable leadoff hitter against righties, as he's sporting a .267/.346/.517 slash line in those matchups.

Harper went 1-for-3 with a solo home run, two walks and a stolen base in Monday's 6-5 extra-inning win over the Dodgers.

Harper has racked up five homers and 10 RBI while batting just .241 (13-for-54) over 14 games in September. He also picked up his first steal since Aug. 20 in this contest. Harper has a .264/.358/.503 slash line with 27 homers, 73 RBI, 70 runs scored, 12 steals and 31 doubles across 123 games this season, giving him fairly steady power production compared to recent years.

Stewart went 3-for-5 with a solo home run, an additional RBI and two additional runs scored in Monday's victory over the Cardinals.

Stewart delivered the second three-hit effort of his young career Monday, starting it off with a 112.6 mph blast over the left-field wall. The highly-touted prospect hasn't drawn a walk yet but continues to hammer the ball at the major-league level, slashing .297/.297/.622 with four homers and six RBI through his first 11 games.

Eldridge went 0-for-3 with one strikeout in Monday's 8-1 loss to the Diamondbacks.

Eldridge, who was promoted from Triple-A Sacramento to make his big-league debut Monday, didn't quite provide the offensive spark his team was looking for, as the Giants were held to two hits on the night. Even so, the 20-year-old slugger should see a healthy dose of at-bats down the stretch of the regular season in either the DH role or at first base while San Francisco fights to earn a postseason bid.

Contreras was removed from Monday's game against the Reds due to right biceps tightness, Derrick Goold of the St. Louis Post-Dispatch reports.

Contreras was back in the starting lineup Monday after sitting out of Sunday's series finale against Milwaukee due to biceps soreness, but he was pulled in the bottom of the seventh inning due to the same issue. The 33-year-old can be considered day-to-day considering the nature of his injury.

Olson went 4-for-5 with a homer, two doubles, four RBI and an additional run scored in Monday's 11-3 win at Washington.

The Atlanta first baseman produced his second four-RBI performance of the season while posting three extra-base hits in a contest for the first time in 2025. Olson gave his squad a 5-1 lead with a three-run blast in the fifth off Nationals starter Mitchell Parker. The three-time All-Star has been on fire in September, batting .378 (17-for-45) with five round trippers, 11 runs scored and 10 RBI across 13 games.

Steer was scratched from Monday's lineup in St. Louis due to neck spasms.

Steer had already been losing playing time to Sal Stewart, and now he has an injury to contend with. To this point, he should be considered day-to-day. Stewart will shift over from third base to first base Monday and Ke'Bryan Hayes will enter the lineup at the hot corner.

Aranda (wrist) will face live pitching this weekend at the Rays' spring training complex in Florida, Marc Topkin of the Tampa Bay Times reports.

Aranda has been ramping up his baseball activities, and if things go well, the 27-year-old could be activated from the 10-day injured list during the final week of the season. He's been sidelined since late July with a fractured left wrist.

The Giants selected Eldridge's contract from Triple-A Sacramento, and he will serve as the designated hitter and bat fifth against the Diamondbacks on Monday, John Shea of the San Francisco Chronicle reports.

The move paves the way for Eldridge to make his major-league debut in Monday's series opener. The 21-year-old was promoted to Triple-A in early June and has since slashed .249/.322/.514 with one steal, 31 runs, 13 doubles, 18 home runs and 63 RBI across 286 plate appearances. He'll serve as the DH in his debut, but Eldridge should also work on the strong side of the platoon at first base with Wilmer Flores across the final two weeks of the regular season.