The Mets acquired Alvarez from the Red Sox on Sunday and selected his contract ahead of Monday's series opener in Toronto.

With Jeff McNeil (wrist) landing on the injured list over the weekend, Alvarez will step into the utility role off the New York bench that was vacated by Jose Iglesias, who is now expected to fill in for McNeil as the Mets' everyday second baseman the rest of the way. A 34-year-old switch hitter, Alvarez last saw big-league action in 2022 with the Dodgers and owned a .247/.348/.463 slash line with 18 home runs and 18 stolen bases in 114 games for Triple-A Worcester this season before he was dealt to the Mets.

Lowe (finger) remains out of the lineup for Monday's game in Philadelphia.

Left-hander Cristopher Sanchez is toeing the rubber for the Phillies, so the lefty-hitting Lowe might not have started Monday even if his finger injury is no longer a concern. In any case, with Lowe on the bench for a fourth straight game, Jose Caballero will pick up another start at second base.

Williams will start at second base and bat ninth in Monday's game against the Reds.

With Whit Merrifield (foot) likely out until the weekend, Williams should be in store for a look as Atlanta's primary second baseman. Williams will pick up his fifth start in six contests after opening September with a .231 average, two stolen bases, two RBI and one run over 13 at-bats.

Holliday is not in the lineup for Monday's game in Boston, Jake Rill of MLB.com reports.

After getting off to a fast start initially upon his promotion from Triple-A Norfolk on July 31, Holliday has stumbled to a .139/.208/.200 batting line with a 34.7 percent strikeout rate over his last 20 games. Livan Soto will start at second base and bat ninth for the Orioles on Monday.

Valdez is out of the lineup for Monday's game against the Orioles, Gabrielle Starr of the Boston Herald reports.

Valdez had started in three of the last four games but will take a seat against a left-hander. Romy Gonzalez draws the start at second base Monday. There had been speculation that Ceddanne Rafaela would move to the keystone with Trevor Story's return from the 60-day injured list Sunday, but that has not developed yet. It could, but early on with Story taking back over as the Red Sox's everyday shortstop, second base has been covered by Valdez against righties and Gonzalez against lefties.

India (elbow) is absent from the lineup for Monday's game in Atlanta.

India exited Sunday's win over the Mets due to left elbow discomfort. While the injury does not seem like a long-term concern, India will miss at least one start. Santiago Espinal will occupy second base for the Reds on Monday.

Gonzales went 2-for-4 with a run scored Sunday against the Nationals.

Gonzales was activated from the injured list Aug. 26 and has started 11 of 13 games since -- all of which have come at second base. He's hit .327 with six RBI and seven runs scored in that span while also striking out at only a 14 percent clip.

Iglesias went 1-for-4 with a stolen base in Sunday's loss to the Reds.

With Jeff McNeil (wrist) done for the season, the door is open for Iglesias to get an everyday role at second base down the stretch for the Mets. The 34-year-old infielder has been remarkably productive since joining the team in late May, and he's slowed down only a little in the second half, slashing .278/.326/.329 over 86 plate appearances since the beginning of August. Iglesias offers effectively no power and only a little speed, but consistent playing time will still give him some fantasy upside in deep formats.

Polanco went 1-for-4 with a two-run home run in a win over the Cardinals on Sunday.

Polanco got in on the fun of the Mariners' 13-hit barrage with a fifth-inning shot off Steven Matz with Justin Turner aboard, extending Seattle's lead to 9-2 at the time. Polanco snapped a nine-game homer drought with the round tripper, which was also just his second hit in the last eight contests. The 31-year-old notably went down on strikes in his other three plate appearances Sunday, pushing his strikeout rate to a career-worst 30.6 percent and highlighting one of the primary culprits behind his career-low .204 average, .296 OBP and .643 OPS.

The Mets acquired Alvarez from the Red Sox on Sunday in exchange for cash considerations.

The move replenishes some organizational utility depth for the Mets. Alvarez, 34, has spent all of the 2024 season at Triple-A Worcester, posting an .811 OPS with 18 home runs and 18 stolen bases while making starts at six different positions.