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April 28: LHP David Peterson begins rehab assignment for Single-A St. Lucie
The start was Peterson's first since undergoing surgery in November to repair a torn labrum in his left hip. Peterson now has almost a full month to stretch out in the Minors before he's eligible to return from the 60-day injured list on May 27. So long as he doesn't suffer a setback, Peterson is a good bet to return at that time.

April 28: LHP Danny Young selected from Triple-A Syracuse; LHP Josh Walker optioned
Needing a fresh arm for their bullpen, the Mets continued to spin their reliever carousel with a new name Sunday. Young, an offseason Minor League signing, will serve as a second lefty behind Jake Diekman with Brooks Raley on the injured list.

Young, who made eight appearances for the Braves last season, held a 1.13 ERA over six games at Syracuse.

April 27: RHP Drew Smith (right shoulder soreness) on 15-day IL; RHP Dedniel Núñez recalled from Triple-A Syracuse
Smith started feeling tightness in the shoulder against the Dodgers on April 20, but he felt well enough to appear against the Giants three days later. After that outing in San Francisco, Smith told manager Carlos Mendoza that he was sore.

“We gave him a couple of days. … He came in Friday and played catch and was feeling it a little bit, and that’s when we decided to take an MRI and it showed inflammation,” Mendoza said. The Mets hope Smith will miss just the minimum two weeks.

As for Núñez, he is no stranger to the big league club. He appeared in one game against the Braves on April 9 and allowed one run in two innings. With Syracuse, he has not allowed a run in 7 1/3 innings.

April 27: OF Starling Marte placed on bereavement list; IF Mark Vientos recalled from Triple-A Syracuse
Marte is expected to be back with the Mets in three days. As for Vientos, he was having a productive season for Syracuse, batting .302 with five home runs and 22 RBIs. He was slated to be on the Opening Day roster, but instead opened the season at Triple-A after the team acquired J.D. Martinez. Vientos could see time at third base or designated hitter, according to Mendoza.

“All the credit to [Vientos]. He is performing. He earned it and he is [in the big leagues],” Mendoza said. “My message to him is to be ready for the opportunity. It could happen today, the next day, who knows. You have to take it day by day, be ready for your chance -- and he will be.”

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10-DAY/15-DAY INJURED LIST

RHP Tylor Megill (right shoulder strain)
Expected return: Mid-May
Megill left his season debut on March 31 after four innings due to right shoulder discomfort, which turned out to be a strain. He refrained from throwing for about a week, then began ramping up again, throwing his first bullpen session on April 19. He struck out six batters during a two-inning rehab start for High-A Brooklyn on April 27, and will pitch again May 2 for Double-A Binghamton. Megill is on track to return in the middle of May, at which point he could supplant either José Buttó or Adrian Houser in the rotation. (Last updated: April 28)

RHP Drew Smith (right shoulder soreness)
Expected return: Mid-May
Smith began feeling shoulder tightness against the Dodgers on April 20, but he felt well enough to appear against the Giants three days later. After that outing, Smith told manager Carlos Mendoza that he was sore. The Mets hope Smith will miss just the minimum two weeks.

“We gave him a couple of days. … He came in Friday and played catch and was feeling it a little bit, and that’s when we decided to take an MRI and it showed inflammation,” Mendoza said. (Last updated: April 27)

LHP Brooks Raley (left elbow inflammation)
Expected return: Early May
Raley, a heavily used reliever who was having trouble recovering between outings, was a surprise addition to the Mets' injured list before their April 21 game against the Dodgers. An MRI revealed no structural damage, and Raley received a cortisone shot to reduce the inflammation in his elbow. He was throwing off flat ground as of April 26 and expects to return around when he's first eligible on May 6. (Last updated: April 26)

C Francisco Alvarez (torn ligament in left thumb)
Expected return: Late June
Alvarez, who tore a ligament in his left thumb in an April 19 game against the Dodgers, underwent surgery to fix it four days later. The Mets expect him to miss approximately eight weeks. They plan to be careful with their starting backstop, given how much stress catching can place on the thumb. For as long as Alvarez is sidelined, Omar Narváez and Tomás Nido will split duties behind the plate. (Last updated: April 23)

60-DAY INJURED LIST

LHP David Peterson (recovery from left hip surgery)
Expected return: Late May or June
Peterson underwent surgery Nov. 6 to repair a torn labrum in his left hip, an injury that had been bothering him for years. The operation carries a typical recovery timetable of six or seven months. Peterson, who began throwing bullpen sessions in March, is targeting a return to the Majors as soon as he's eligible to come off the 60-day IL on May 27. To that end, he began a Minor League rehab assignment for Single-A St. Lucie on April 28.

Once healthy, Peterson figures to return to his role as a rotation depth option. (Last updated: April 28)

RHP Kodai Senga (right posterior shoulder capsule strain)
Expected return: Late May or June
On April 10, the Mets transferred Senga to the 60-day IL, making him ineligible to return until May 27. That considerably clarified the timeline for Senga, who began the equivalent of a Spring Training progression when he resumed throwing off flat ground the week of March 25.

Senga's ramp-up period could last longer than that of a typical pitcher due to the Mets' preference to have him pitch every six days instead of every five. Even during the flat-ground portion of his recovery, Senga took a full week before he started playing catch every day. He threw multiple bullpen sessions the week of April 22 and is due to face hitters for the first time on April 29.

It wouldn't be surprising for Senga's absence to linger into June. (Last updated: April 26)

INF Ronny Mauricio (recovery from right knee surgery)
Expected return: Possibly September
Mauricio underwent surgery in early January to repair a torn ACL in his right knee, which he injured during winter ball in the Dominican Republic. A typical return timetable for that operation is eight to 12 months, giving Mauricio an outside chance to rejoin the Mets in September. If not, he'll return in 2025.

The club transferred him to the 60-day IL at the start of Spring Training. (Last updated: Feb. 14)

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