It’s pitching preview time, ladies and gentlemen. Over the next several days, I’ll be writing 10,000 words or so about everyone you might see pitching for the Red Sox to start the season.
Last time, we took a look at the primary middle relief options. Today, we’re talking about the last part of the bullpen: the lefties.The left-handed relief group is lacking depth. Aroldis Chapman is the only southpaw in the bullpen with significant MLB experience, and he’ll handle the ninth inning almost exclusively.
Patrick Sandoval could also figure into the mix here, but that will probably be in a long relief role to keep him stretched out for a spot start, if necessary. Past that, there aren’t many veterans in the mix.
While the three-batter minimum has changed the role of lefty reliever, it’s still a unique one. Oftentimes, you’re being called on to clean up someone else’s mess. Recent rule changes mean that these pitchers need to be able to get both sides of the plate out, though matching up with pockets of left-handed hitters is still their primary responsibility. The group isn’t very deep, so don’t be surprised to see an addition before the season begins.
Jovani Moran
Jovani Moran is in pole position to win the spot as the first lefty out of the bullpen, which is somewhat terrifying. Moran threw four innings in the majors last season; before that, he hadn’t pitched in the majors since 2023. Fortunately, while the track record of success isn’t there, there’s plenty to like about what Moran brings to the table.
Moran’s best season came all the way back in 2022. He posted a 2.21 ERA over 40 2/3 innings with a 33% strikeout rate and 11% walk rate. He was effective against both sides of the plate, but his stats against righties were slightly stronger. It’s thanks to his changeup, which has posted swinging strike rates over 20% in each of his four big league seasons. He keeps the ball down well, which prevents hard contact, though the lone zone rate contributes to his high walk rate. His four-seam fastball has a flat shape and is thrown with seven feet of extension, which led to decent swing and miss numbers, though righties didn’t expand the zone frequently. It’s up to 94 mph in Spring Training, and it will play well if he can locate it at the top of the zone.
Against lefties, it’s a similar story. Both his changeup and his fastball created whiffs, but the four-seam didn’t get hitters to chase. He mixed in a slider as well, although it was almost never in the zone, so it didn’t help with his walk issue. He showed a cutter and a slider last year in the minors and in Spring Training, though he’s thrown 92% fastballs and changeups for Puerto Rico in the World Baseball Classic. He’s faced almost entirely righties and done a good job keeping his fastball up. He’s yet to allow a run over three innings, striking out one and walking two. He needs to be in the zone and limit walks, but the strikeout potential is enough to give him the inside track to the opening day roster.
Tyler Samaniego
Samaniego came over in the Johan Oviedo trade and is a really intriguing arm. Stop me if you’ve heard this before — he’s a big lefty with huge extension. He has different approaches against each side of the plate. Righties see a four-seam fastball with solid vertical movement from a low release that should be able to miss bats with solid command. It’s paired with a changeup that can induce whiffs when he spots it on the arm side. Lefties see sinkers with solid horizontal movement, and a slider that’s both in and out of the zone. His velocity and extension give him a solid floor, although the secondary pitches need to be honed in to reach his potential. He walked 7% of hitters in 38 minor league innings last season, a level of strike-throwing that will help him get to the big leagues.
Samaniego was late to get into a spring training game, but he’ll be ready to go for opening day. He’s on the 40-man roster, but he has options remaining, so he’s not a lock for the opening day roster. He’s probably next in line behind Moran for the leverage lefty spot in the bullpen.
Alec Gamboa
Gamboa is a non-roster invitee who throws from a straight over-the-top arm slot. He spent part of 2025 in the KBO, where he struck out 24.6% of hitters but walked 10.3%. He has a 94 mph four-seam and sinker, as well as a hard slider and a steep curveball. He was shut down for a few days with elbow soreness, however, and is on the outside looking in for the 26-man roster.
T.J. Sikkema
T.J. Sikkema is a soft-tossing lefty who worked as a starter for a recent Spring Training game. The lack of velocity limits his upside and makes it hard to find a spot for him as the matchup lefty, but he’s shown good command in camp. He’s spotted his sinker consistently on the arm side, allowing him to get strikes and weak contact. He’s also thrown his cutter to righties on the glove side regularly, although the lack of velocity makes it possible for them to get around it. He’s unlikely to find a spot besides a depth option to provide innings, but his command in camp has been impressive.
Jeremy Wu-Yelland
Jeremy Wu-Yelland was already reassigned to minor league camp, so he won’t be on the active roster to start the season. That doesn’t mean he won’t appear in a big league game this year, though.
Wu-Yelland is similar to other Red Sox pitchers in that he has a low release that helps create a flat approach angle on his four-seam fastball. He’s also very different due to the fact that he has less than five feet of extension. He has a unique delivery that allows him to hide the ball, although the cross-body style he employs sometimes leads to inconsistency in command. His walk rate was 8.5% last season over 45 innings at High-A and Double-A, so he appears to have a handle on it, but strike-throwing was an issue earlier in his career.
While he’s yet to reach Triple-A, his ability to punch hitters out has stood out in the low minors. Last season, his strikeout rate was over 37%. His fastball has touched 97 mph, and he also has a hard cutter/slider that he’s uses as a primary offering. His go-to breaking ball is a sweeper that he hasn’t quite found a feel for, but it contributed to that huge strikeout rate by missing bats. Wu-Yelland isn’t on the 40-man roster, so Samaniego is probably in front of him, as is Moran, but he isn’t that far down the totem pole and has a chance to debut this season.
