Manager Scott Servais said Swanson (groin) is expected to be sidelined for an extended period, Ryan Divish of The Seattle Times reports.

EDGE Analysis

The 27-year-old doesn't have an official timeline for his return after landing on the injured list with a strained right groin Saturday, but he can be ruled out indefinitely for now. Swanson was pitching well prior to the injury with a 0.69 ERA, 0.77 WHIP and 14:6 K:BB across 13 innings.

Swanson was placed on the 10-day injured list Saturday with a strained right groin.

EDGE Analysis

The 27-year-old recorded his first save of the season with 1.1 scoreless frames Friday against the Rangers, but he apparently injured his groin during the contest. Swanson will be eligible to be activated June 8, though it's unclear how long he's expected to be sidelined.

Swanson saved Friday's 3-2 win over the Rangers, throwing 1.1 innings and allowing a hit and a walk with two strikeouts.

EDGE Analysis

Swanson relieved Keynan Middleton with two outs and runners on first and second in the eighth and induced an Adolis Garcia strike out before retiring Jason Martin with two on and two out in the ninth to lock down his first save. Swanson's use in the closer role Friday could be a result of Rafael Montero seeing work in three of the last four games or manager Scott Servais rewarding an excellent 0.69 ERA.

Swanson secured his second hold in a win over the Athletics on Monday, issuing a walk and recording three strikeouts.

EDGE Analysis

Swanson got 11 of his 18 pitches into the strike zone while lowering his ERA to 0.77. The right-hander has put together five consecutive scoreless appearances, a stretch during which he's notched a pair of holds and an 8:3 K:BB over five innings.

Swanson allowed one run on two hits and a walk over 2.2 innings in Saturday's loss to the Rangers. He didn't factor into the decision.

EDGE Analysis

The righty was sharp Saturday as he opened against a Rangers lineup that has a lot of pop. The 27-year-old threw 30 of his 45 pitches for strikes and now will look to build up manager Scott Servais' trust in order to earn a longer leash in a rotation that may call up some young arms as the season progresses. Swanson will more than likely open for two to three innings in his next appearance and now has a 1.35 ERA and 0.60 WHIP on the season.

Swanson will start Saturday's game against the Rangers, Ryan Divish of The Seattle Times reports.

EDGE Analysis

Swanson served as an opener Monday, and the Mariners hope to get two or three innings out of him Saturday before bringing in a bulk reliever. In his first two outings of the season, Swanson has allowed no hits and a walk while striking out four in four innings.

Swanson registered a no-decision Monday against Baltimore, going two innings and allowing no base runners with three strikeouts in a 5-3 loss.

EDGE Analysis

Making his first start and second appearance of 2021, Swanson shut down the Orioles albeit over just two innings as the opener. The quality outing may have earned him another opportunity moving forward.

The Mariners recalled Swanson from their alternate training site Sunday.

EDGE Analysis

Swanson will offer the Mariners some length out of the bullpen ahead of Sunday's series finale against the Angels after Seattle needed four relievers to cover the final seven innings of Saturday's 10-5 loss. If Justus Sheffield can work relatively deep into Sunday's start, the Mariners could bypass using Swanson and deploy him as the spot starter for what's expected to be a bullpen game in Monday's series opener in Baltimore. The Mariners plan to keep a six-man rotation intact while Marco Gonzales (forearm) is on the shelf, but manager Scott Servais has yet to name a replacement for the southpaw.

Swanson was optioned to the alternate training site Friday.

EDGE Analysis

The 27-year-old was recalled from the alternate site at the start of the week and will return there with Anthony Misiewicz activated from the COVID-19 injured list Friday. Swanson fired two scoreless frames in his lone appearance during his brief time with the team.

Swanson was recalled by the Mariners on Monday.

EDGE Analysis

Swanson began the season at the Mariners' alternate training site even though he posted a 2.84 ERA and 0.63 WHIP in 6.1 innings this spring. However, he'll rejoin the major-league bullpen after Anthony Misiewicz was placed on the injured list for an unspecified reason Monday. Swanson gave up 11 runs in 7.2 innings across nine relief appearances for Seattle last year and will presumably serve in a low-leverage role in 2021.