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Red Sox Designate Luis Guerrero For Assignment

The Red Sox announced that right-hander Luis Guerrero has been designated for assignment. The Sox had several players who needed to be reinstated from the 60-day injured list and needed to open a 40-man spot.

Many teams in the league face roster crunches at this time of year. The 60-day IL goes away five days after the World Series and doesn’t come back until spring training. When players are reinstated from the 60-day IL, they need to retake spots on the 40-man roster. Some players will reach free agency, which opens some space, but teams often end up needing to open spots. This move gets the Sox to 40 for now, but they will probably want to open more spots later. They will likely want to add players ahead of this month’s Rule 5 deadline, in addition to signing free agents throughout the winter.

Guerrero, 25, was a 17th-round pick in the 2021 draft. Exclusively a reliever, he worked his way up the minor league ladder. He was added to the club’s 40-man roster in September of last year. He has mostly been kept in the minors.

Between last year and this year, he has thrown 27 1/3 big league innings with a 2.63 earned run average. His 44.4% ground ball rate is decent but his 17.6% strikeout rate and 14.8% walk rate are poor figures. His ERA is being held down by a tiny .205 batting average on balls in play. His 3.51 FIP and 5.28 SIERA suggest he’s been quite fortunate in this small sample. His fastball averages in the upper 90s while he also throws a slider and a changeup.

In the minors, he has occasionally shown good strikeout stuff but also with poor control. From 2022 to 2024, he tossed 147 2/3 innings on the farm with a 2.93 ERA. He walked 13.4% of batters faced but also punched them out at a 32.1% clip. In 2025, his minor league results backed up. He tossed 26 2/3 Triple-A innings with a 4.39 ERA, 19.8% strikeout rate and 14.7% walk rate.

He was placed on the major league injured list in late June due to a right elbow sprain. He was transferred to the 60-day IL. He finished the season there, though he did pitch in the minors on a rehab assignment before the season was done.

Presumably, his tough year contributed to him getting nudged off the roster. The Sox will now have a week to trade him or pass him through waivers. The waiver process takes 48 hours, so any trade talks will have to take place in the next five days. Guerrero is coming off a tough year but still has options and has shown flashes of potential in the minors.

Photo courtesy of Kiyoshi Mio, Imagn Images

Source: https://www.mlbtraderumors.com/2025/11/red-sox-designate-luis-guerrero-for-assignment.html
 
Red Sox, Cooper Criswell Agree To Deal For 2026

The Red Sox and righty Cooper Criswell have agreed to terms on a contract for the 2026 season, reports FanSided’s Robert Murray. Criswell, a client of Republik Sports, was already on the 40-man roster but wasn’t necessarily a lock to stick all offseason. He’s now agreed to a fully guaranteed $800K, per Murray, which greatly enhances his chances of staying in place.

Boston could still pass Criswell through waivers at some point this winter. He’s out of minor league options and would thus need to break camp with the club or else be designated for assignment. The fully guaranteed $800K, while only a bit north of the league minimum salary, makes it less likely that he’d be claimed by another club and also ensures that Criswell would accept an outright to the minors. He’d have the right to reject a minor league assignment upon clearing waivers by virtue of the fact that he’s been outrighted in the past, but he doesn’t have the service time necessary to reject and retain the remainder of that guarantee.

The 29-year-old Criswell appeared in seven games for the Sox this year, logging 17 2/3 innings of 3.57 ERA ball but with only an 11.3% strikeout rate. He’s totaled 154 2/3 innings across parts of five major league seasons and carries a career 4.48 ERA, 16.7% strikeout rate and 7.1% walk rate between the Angels, Rays and Red Sox. He also tossed 65 2/3 innings of 3.70 ERA ball for the Sox’ Triple-A affiliate in Worcester this season, working primarily as a starter.

While Criswell isn’t going to be penciled into next year’s rotation, he’ll be a depth option and could compete for a swing role in camp. Rotation help will be a focus for Red Sox chief baseball officer Craig Breslow this winter. Ace Garrett Crochet will again lead the rotation. He’ll be followed by Brayan Bello, but the rest of the group is more in flux. Kutter Crawford missed the entire season due to oblique and wrist injuries — the latter requiring surgery in July. Tanner Houck had Tommy John surgery this summer. Hunter Dobbins’ season ended with an ACL tear. Lucas Giolito is a free agent.

Top prospects Payton Tolle and Connelly Early debuted late in the season and impressed to varying extents, but neither will simply be handed a rotation spot. Veteran Patrick Sandoval should be healthy after spending 2025 rehabbing from UCL surgery. Former top prospect Kyle Harrison, acquired in the Rafael Devers trade, will be in the mix — as will righty Richard Fitts. There are plenty of in-house options, but some of those names could move to the bullpen and others may need more time in Triple-A. Adding a playoff-caliber arm to the rotation mix seems likely, whether that addition comes via free agency or trade.

Source: https://www.mlbtraderumors.com/2025/11/red-sox-sign-cooper-criswell-2026.html
 
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