Acuna was optioned to Triple-A Syracuse on Sunday, Tim Britton of The Athletic reports.

The 21-year-old was with the Mets for the first couple weeks of big-league camp but will now move over to the minor-league side of spring training. Acuna immediately became one of the Mets' top prospects after being acquired from the Rangers in the Max Scherzer trade in July, and a strong showing at Syracuse this season could set up the young infielder's MLB debut later in the year.

Marte went 2-for-3 with two doubles in Saturday's spring game against the Angels.

Marte has hit safely in all five Cactus League games, going 8-for-13 with three extra-base hits. He will be Arizona's primary second baseman for a third consecutive season in 2024. Since moving to the keystone in 2022, Marte has played 137 and 150 games in successive seasons. Prior to moving full-time to second base, he was bedeviled by hamstring issues when the Diamondbacks made him a full-time center fielder from 2019 to 2021.

Red Sox manager Alex Cora said Saturday that Valdez is next in line at second base due to Vaughn Grissom (groin) being sidelined, Pete Abraham of The Boston Globe reports.

The team is not yet ruling Grissom out for Opening Day, but it looks like a longshot that he'll be ready. A replacement from outside the organization doesn't appear to be in the cards, which leaves Valdez at the top of the pecking order and Pablo Reyes also in the mix. Valdez, 25, struggles with the glove but has some offensive promise, having slashed .266/.311/.453 with six homers and five steals over 149 plate appearances with Boston in 2023.

Massey has gone 3-for-10 over four Cactus League games.

After hitting .229 with a middling .655 OPS across 129 contests in 2023, this is a good start to the spring for Massey. The Royals had an active offseason, and the signing of Adam Frazier -- who is 0-for-6 over three spring games -- could have a negative impact on Massey's playing time, though Frazier can also be an option in the corner outfield. Utility man Nick Loftin could also poach some at-bats at the keystone, especially against left-handed pitchers, so Massey will need to continue his solid spring to avoid losing his spot.

Manager Skip Schumacher indicated Friday that Brujan has "a high likelihood" of winning a spot on the Marlins' initial 26-man roster, Jordan McPherson of the Miami Herald reports.

"He's got a really good chance to make the team," Schumaker said. "He's versatile. He's done enough in Triple-A. He can run. He switch hits. He can do a lot of things for us. I haven't told him that he's made the team or anything like that, but I would anticipate him being part of our club." Brujan was picked up from the Rays in an offseason trade and is out of minor-league options, so him making the Opening Day roster wouldn't be a huge surprise, but it remains to be seen what kind of role the 26-year-old can carve out on a Miami roster that already has Jon Berti entrenched in a utility role and also added Nick Gordon in February.

Schneider went 2-for-3 with a solo home run and a second run scored in Friday's Grapefruit League game against the Yankees.

Getting the start at second base and batting third in a Blue Jays lineup that featured only one other projected Opening day starter in Daulton Varsho, Schneider took Luke Weaver deep in the fifth inning for his first long ball of the spring. The 25-year-old made a spectacular MLB debut last August before cooling down, and with Cavan Biggio (shoulder) yet to see any Grapefruit League action, Schneider is getting an opportunity to prove he's ready to be the starter at the keystone, rather than a utility player.

Manager Carlos Mendoza said Saturday that McNeil is dealing with left biceps soreness and will be shut down from hitting for a few days, Tim Healey of Newsday reports.

McNeil will not undergo an MRI as the injury isn't believed to be serious enough to warrant that, but the infielder will be reassessed by the team Tuesday. He was expected to make his spring training debut in the first week of March, but the Mets are opting for the cautious approach given the biceps soreness is in the same arm that McNeil sustained a partial ligament tear late last season. He slashed .270/.333/.378 with 10 home runs and 55 RBI over 648 plate appearances in 2023.

Estrada has gone 3-for-12 over four Cactus League games.

While the Giants' infield is getting crowded after Friday's signing of Matt Chapman, there's little reason to think Estrada is in danger of losing his starting job at the keystone. Estrada hit .271 with a .731 OPS, 14 home runs, 23 stolen bases, 49 RBI and 63 runs scored over 120 contests last year. With a little more pop in the Giants' lineup, his counting stats could rise if he stays in the top half of the order.

Julien worked in the offseason to limit his front shoulder from flying open during swings against lefties, the Bobby Nightingale of the Minneapolis Star Tribune reports. "I changed a couple of things in my swing to adjust to the slider and be able to hit the fastball against lefties," he said earlier this week. He's 6-for-10 with a walk in four games this spring and 2-for-5 against left-handed pitching. He went 2-for-3 with a home run in Friday's Grapefruit League win over Boston.

Julien had an outstanding rookie season with a .381 OBP and drew walks at a near league-leading 15.7 percent clip. However, he hit just .195 with a .447 OPS against left-handed pitching. Julien will become the primary starter at second base after the trade of Jorge Polanco but will likely be platooned with Kyle Farmer. If Julien can show improvement against left-handed pitching, he could take over everyday duties.

Gonzales went 2-for-3, hitting one double and scoring once in Pittsburgh's 9-8 loss to Baltimore on Thursday.

Gonzalez is in a fierce competition for one of the final spots on the Opening Day roster, as the 2020 first-round pick is battling with Liover Peguero and Ji Hwan Bae for a utility infield job. Through a handful of spring-training at-bats, he's hitting .300, but he'll need to consistently maintain success after hitting just .209 last season across 35 games.