The Red Sox transferred Guerrero (elbow) to the 60-day injured list Saturday.

EDGE Analysis

Guerrero landed on the injured list in late June with a strained right elbow, and his move to the IL will ensure he remains on the shelf until at least Aug. 27. He'll also cede his spot on the 40-man roster to Nick Burdi (hip), who was reinstated from the 60-day injured list Saturday and optioned to Triple-A.

The Red Sox placed Guerrero on the 15-day injured list Saturday due to a right elbow strain.

EDGE Analysis

Guerrero allowed four runs on four hits and three walks while striking out one batter over his last two outings, and his elbow injury may have played a part in his recent poor performance. He's eligible to be reinstated July 13, but a strained elbow to the throwing arm typically results in a longer-than-minimum stint on the IL. To bolster their bullpen, the Red Sox reinstated Chris Murphy (elbow) from the 60-day IL in a corresponding move.

The Red Sox recalled Guerrero from Triple-A Worcester on Sunday.

EDGE Analysis

He'll be joining the bullpen as a replacement for right-hander Justin Slaten (shoulder), who was placed on the 15-day injured list in a corresponding move. Guerrero had two stints with the big club earlier this season, making four relief appearances while logging a 1.69 ERA and 1.13 WHIP over 5.1 innings. Expect the Red Sox to use him primarily in lower-leverage spots.

The Red Sox are expected to promote Guerrero from Triple-A Worcester on Sunday, Chris Cotillo of MassLive.com reports.

EDGE Analysis

Guerrero has spent most of the season in Triple-A, where he has a 4.43 ERA, 1.24 WHIP and 16:11 K:BB across 20.1 innings. He's made four appearances out of the Red Sox's bullpen this season and has allowed one run on three hits and three walks while striking out four across 5.1 innings.

The Red Sox optioned Guerrero to Triple-A Worcester on Sunday, Jen McCaffrey of The Athletic reports.

EDGE Analysis

Guerrero was up with the big club for just one day and will be sent back to the minors after giving up an earned run on two hits and three walks over 1.1 innings in the second game of Saturday's doubleheader. Right-hander Zack Kelly was recalled from Triple-A to take Guerrero's spot in the bullpen.

The Red Sox recalled Guerrero from Triple-A Worcester on Saturday.

EDGE Analysis

Guerrero has appeared in three major-league games for the Red Sox this season and has tossed four scoreless innings while allowing one hit and striking out three batters without issuing a walk. He has a 4.91 ERA, 1.27 WHIP and 16:10 K:BB across 18.1 innings in Triple-A this season. Guerrero will take the spot in the bullpen vacated by Sean Newcomb, who was designated for assignment by the Red Sox in a corresponding move.

The Red Sox optioned Guerrero to Triple-A Worcester on Saturday.

EDGE Analysis

Since joining Boston on April 24, Guerrero has pitched four shutout innings while striking out three batters and walking none. Despite his performance, he'll end up as the roster casualty with Brennan Bernardino returning from the bereavement list.

The Red Sox recalled Guerrero from Triple-A Worcester on Thursday.

EDGE Analysis

Guerrero holds a 5.23 ERA and 7:5 K:BB over 10.1 frames this season with Worcester. He will provide manager Alex Cora with a fresh arm in the bullpen.

The Red Sox optioned Guerrero to Triple-A Worcester on Wednesday, Chris Cotillo of MassLive.com reports.

EDGE Analysis

Guerrero struck out 10 over 5.2 innings this spring but also walked nine and surrendered six runs. The 24-year-old was terrific during a cup of coffee in the majors last season -- allowing just one unearned run over 10 innings -- and should get another opportunity in the big leagues sooner rather than later.