Acuna is starting at second base and batting ninth in Monday's game versus the Nationals, Andrew Tredinnick of NorthJersey.com reports.

Acuna has now been in the lineup three times in four games since Jeff McNeil returned from the injured list, as McNeil has started in center field twice during that span and was on the bench the one time the Mets faced a lefty. If McNeil proves to be a viable option on a regular basis in center field, Acuna could find himself in the lineup often at the keystone.

Koss went 1-for-3 with an RBI in Sunday's 3-2 win over the Rangers.

Koss lined a two-out RBI single into left field to tie the game at 2-2 in the fourth frame. The 27-year-old infielder owns a .333 batting average in his last five appearances after hitting .143 in his first seven. Koss has recorded a hit in each of the Giants' previous two games, receiving the starting nod at second base while Tyler Fitzgerald recovers from a chest contusion. Koss is now slashing .217/.280/.217 with four runs scored and a 1:8 BB:K across 26 plate appearances.

Marte (hamstring) is travelling with the Diamondbacks on their six-game road trip beginning Tuesday, Jack Sommers of SI.com reports.

Marte has been on the injured list since April 5 with a left hamstring strain, but he now appears to be on the cusp of returning to Arizona's lineup. The 31-year-old is not expected to play in the team's three-game set in New York versus the Mets, but he is slated to make his return when the team travels to Philadelphia for three games beginning Friday. Prior to getting hurt, Marte produced a .346 average with three doubles, an RBI and six runs scored over 26 at-bats in eight games this season.

Amador is not in the Rockies' starting lineup against the Reds on Sunday, Thomas Harding of MLB.com reports.

Amador will begin Sunday's contest in the dugout while Owen Miller starts at the keystone and bats ninth against Reds southpaw Nick Lodolo. Amador went 3-for-4 with a home run, a steal and two RBI in Saturday's loss to Cincinnati, and the 22-year-old is batting .214 over 32 plate appearances to start the season.

Fitzgerald (chest) is not in the Giants' starting lineup against the Rangers on Sunday, Shayna Rubin of the San Francisco Chronicle reports.

Fitzgerald is dealing with a chest contusion, which caused him to be scratched from Saturday's game against Texas. With the Giants scheduled for a day off Monday, Fitzgerald will head into Tuesday's game against the Padres with a few straight days of rest. Christian Koss will start at second base and bat ninth against Rangers right-hander Jack Leiter (finger) on Sunday.

The Rockies selected Trejo's contract from Triple-A Albuquerque on Sunday.

Trejo was re-acquired by the Rockies from the Rangers on Saturday in exchange for cash considerations. The 28-year-old infielder will join the 26-man roster ahead of Sunday's series finale against the Reds. He appeared in 28 games for Colorado in 2024, posting a .143/.182/.143 slash line with four runs scored and one RBI in 67 plate appearances.

McLain is not in the Reds' starting lineup against the Rockies on Sunday.

McLain will take a seat for Sunday's series finale after going 0-for-18 with nine strikeouts over his last four games. Gavin Lux will start at the keystone and bat fifth against Rockies right-hander Ryan Feltner.

McNeil is not in the Mets' starting lineup against the Nationals on Sunday.

McNeil will begin Sunday's game in the dugout while Luisangel Acuna starts at second base and bats eighth against Nationals southpaw Mitchell Parker. McNeil returned from a right oblique strain Thursday and has gone 2-for-7 over the first two games of the series.

Mauricio (knee) will start a rehab assignment with Single-A St. Lucie on Sunday.

Mauricio is in the final stages of his recovery from a procedure in January of 2024 to repair a torn ACL in his right knee. He participated in extended spring training, and he has progressed enough to embark on a rehab assignment in the minors. How Mauricio's knee reacts to increased activity will determine the next steps in his rehab program.

Gorman is not in the Cardinals' starting lineup against the Brewers on Sunday.

With the Brewers sending southpaw Jose Quintana to the mound, the lefty-hitting Gorman will head to the dugout for the start of Sunday's game while Luken Baker serves as the designated hitter and bats fifth. Since being reinstated from the 10-day injured list April 12, Gorman has gone 6-for-37 (.162) with five walks, four runs scored, seven RBI and a 31.8 percent strikeout rate.