Mauricio is not in the lineup for the first game of Wednesday's doubleheader against the Brewers.

He'll likely be back in the lineup for the second game of the twin bill, but Mauricio will begin the matinee on the bench. The Mets will roll with Brett Baty at second base.

Arenado (finger) is out of the lineup for Wednesday's game against the Pirates, Katie Woo of The Athletic reports.

After spraining his right index finger in Sunday's win over the Guardians, Arenado went 0-for-3 as the Cardinals' designated hitter in Monday's 7-0 loss to the Pirates. The injury was still bothering him enough coming out of that game for the Cardinals to hold him out for Tuesday's 1-0 loss, and the veteran third baseman will get another day off to heal Wednesday. Thomas Saggese will cover the hot corner in place of Arenado, who will benefit from a team off day Thursday before potentially returning to the lineup for this weekend's series versus the Cubs.

Marte (oblique) went 2-for-3 with two walks, a home run and five RBI for Triple-A Louisville on Tuesday.

Marte started at third base and played all nine innings, the first nine-inning game he's played in the field during his rehab assignment. The rehab has taken him from the Arizona Complex League (three starts) to Double-A Chattanooga (four starts) and now to Louisville. Per MLB.com, Marte is slated to play two games with the Bats before being re-evaluated.

Riley went 3-for-4 with a double in Tuesday's 4-0 loss to the Angels.

The three-hit effort was Riley's fifth of the campaign and his first since June 9. The 28-year-old third baseman is batting a strong .286 over his last 98 at-bats, but he has only two home runs and nine RBI during this 24-game period. It's possible Riley will move down the batting order from fourth to fifth once Jurickson Profar (suspension) gets back into the fold, although the latter's return should only aid the former's fantasy upside.

Arenado was diagnosed with a right index finger sprain Tuesday, Katie Woo of The Athletic reports.

Arenado initially injured himself Sunday and worked as the DH on Monday, but he will be held out of the starting nine entirely Tuesday while Nolan Gorman starts at the hot corner. X-rays on Arenado's finger came back negative, so he's being considered day-to-day for now.

Arenado is not in the lineup for Tuesday's game in Pittsburgh.

Arenado was lifted from Sunday's game in Cleveland with a jammed right index finger and was used at designated hitter Monday. It's not clear whether his absence from Tuesday's lineup is related to that injury or is simply a day of rest. Nolan Gorman will be at third base and bat fifth for the Cardinals.

The Nationals activated DeJong (orbital) from the 10-day injured list Tuesday.

DeJong has been sidelined since mid-April due to a fractured nose and orbital bone, but he is ready to go following a 12-game rehab stint with Double-A Harrisburg. The 31-year-old had been serving as the Nationals' primary third baseman prior to getting hurt, but with Brady House now holding down that job, DeJong is likely to serve as a reserve infielder.

Mauricio is absent from the lineup for Tuesday's game versus the Brewers.

Mauricio has now started two of four games since Mark Vientos returned from the 10-day injured list, and he could continue to struggle to find consistent playing time. Brett Baty is at second base and batting ninth for the Mets in Tuesday's series opener.

Marte (oblique) appeared in both ends of a doubleheader Sunday and went a combined 3-for-6 with a walk, a triple and two RBI for Double-A Chattanooga.

Rain washed out potential rehab games Friday and Saturday before Marte returned to the field. He served as the designated hitter in Sunday's opener and played third base in the nightcap. The rehab plan was for Marte to play five consecutive games for the Lookouts before he was to be re-evaluated, but the rain limited him to four contests. Chattanooga was off Monday and will begin a road trip Tuesday. It is unclear if the Reds will send Marte on the road or conduct the re-evaluation.

Groover was named to the All-Star Futures Game roster Monday, Connor Emery of Arizona Sports reports.

Groover, 23, returned to Double-A Amarillo to start the 2025 season and will likely take the next step to Triple-A Reno. He has a .301/.377/.471 line with 10 home runs and 36 RBI over 67 games for the Sod Poodles. There are questions about Groover's defense, but he's spent all season at third base. He could eventually swing to the cold corner where his defense and quickness won't get in the way of his bat.