Cleveland Guardians Announce Decision on 36-Year-Old Pitcher

The Cleveland Guardians took another step toward getting veteran right-hander Shawn Armstrong back this season, sending him on a rehab assignment to Triple-A Columbus on Friday, via the MLB transaction log.

Armstrong, 36, has been out since late July with a left calf strain. He was placed on the 15-day injured list on July 25 after leaving Friday night’s game against the Tampa Bay Rays at Tropicana Field.

Backpedaling behind home plate to back up a play in the eighth inning of an 11-3 loss, he felt a sharp pain in his left leg and crumpled to the turf. Staff members carried him off the field.

Tests showed a “pretty significant calf tear,” Armstrong said at the time, though the Achilles was cleared.

On Aug. 3, Cleveland transferred him to the 60-day injured list to open a 40-man roster spot for first baseman Nathaniel Lowe. That move made Armstrong ineligible to return until Sept. 23 — late enough that his 2026 season was in real doubt.

He threw a bullpen in late August as his throwing program advanced, and Friday’s assignment to the Clippers is the next checkpoint. MLB.com’s injury report said he was slated to pitch for Columbus in Louisville on Sept. 11; his player page lists the Clippers’ next game as Saturday at Louisville.

It has been a grind of a homecoming year. Armstrong, originally drafted by Cleveland in the 18th round in 2011 and a Guardian from 2015-17, signed a one-year, $5.5 million deal last December with a mutual option for 2027.

He opened 2026 in the late-inning mix but missed about four weeks in April and May with a right groin strain, rehabbing then with Double-A Akron before returning in mid-May. In 38 games before the calf injury, he was 2-1 with a 4.91 ERA, 33 strikeouts and 19 walks in 33 innings.

A healthy Armstrong would give manager Stephen Vogt another experienced arm as Cleveland tries to stay in the AL wild-card picture.

Even a short September look could matter if the club wants extra bullpen depth for the final week or a possible postseason roster. Rehab appearances will decide how many innings he needs and whether the calf holds up under game stress.

Armstrong’s career line now sits at 17-12 with a 3.90 ERA in more than 450 innings across 12 big-league seasons.

For a pitcher who has bounced around after leaving Cleveland the first time, this assignment is less about nostalgia than about proving he can still help in October — or at least finish the year on the mound instead of the trainer’s table.

How he looks in Columbus will tell the Guardians which of those is still possible.