Red Sox roster moves: Martín Pérez, Matt Barnes placed on COVID-19 related injured list, Phillips Valdez recalled from Triple-A Worcester, Raynel Espinal selected to 40-man

Perez and Barnes become the the third and fourth Red Sox players to head to the COVID-related injured list within the last three days, as they join the likes of infielder/outfielder Enrique Hernandez and infielder Christian Arroyo, who tested positive on Friday and Sunday, respectively. Strength and conditioning coach Kiyoshi Momose also tested positive on Sunday.

Perez, who opened the 2021 season in Boston’s starting rotation but was demoted to the bullpen earlier this month, tested positive for the virus on Monday, Red Sox manager Alex Cora told reporters (including MassLive.com’s Christopher Smith).

“We found out not too long ago,” Cora said. “So we’re going through the process, through protocol, close contact, people getting tested and everything else.”

On that note, it’s not yet clear if Barnes necessarily tested positive for COVID-19, or if he was simply identified as a close contact of Perez’s after contact tracing.

That being said, Arroyo was first placed on the COVID IL on Friday after being identified as a close contact of Hernandez’s, but later tested positive for the virus himself on Sunday.

Regardless of that, though, Barnes, who is vaccinated against the virus, will head to the COVID-related IL for a second time this season after spending one day there earlier this month.

With both Perez and Barnes out of action for the time being, the Sox have added two right-handed hurlers from Worcester in the form of Valdez and Espinal.

Valdez, 29, is back up with Boston for the third time this year after he was most recently sent down to the WooSox on August 12.

Espinal, meanwhile, was able to be added to the Red Sox’ 40-man roster without a corresponding move being made since players on the COVID-related injured list do not count against the 40-man.

Originally acquired from the Yankees in the minor-league phase of the 2019 Rule 5 Draft, the 29-year-old out of the Dominican Republic has had a solid season for himself as a member of Worcester’s starting rotation.

In 18 appearances (16 starts) with the WooSox so far this year, Espinal has posted a 3.74 ERA and 4.09 FIP to go along with 89 strikeouts to 36 walks over 91 1/3 total innings of work.

Per his SoxProspects.com scouting report, Espinal — who is up at the major-league level for the first time in his professional career — operates with a four-pitch mix that consists of a 91-93 mph fastball, an 83-86 mph slider, an 82-84 mph changeup, and a 77-79 mph curveball.

In addition to Espinal, who will wear the No. 80, and Valdez being added to the big-league roster, the Red Sox seem likely to activate recently-acquired right-hander Brad Peacock on Tuesday. We will have to wait and see on that.