Latest on Mariners’ bullpen targets

Mariners general manager Justin Hollander publicly admitted a few weeks back that the club would be looking for bullpen upgrades. Adam Jude of The Seattle Times reports that Seattle plans to add two relievers and hopes to have one locked down by the end of the Winter Meetings next week. Adding a lefty is a priority and Jude lists five names they are considering, with four of them being southpaws. They are Matt Strahm of the Phillies, JoJo Romero of the Cardinals, Jose A. Ferrer of the Nationals, as well as free agents Tyler Rogers and Hoby Milner. Rogers is the lone right-hander in that group. Jude also mentions that the Mariners had interest in right-hander Phil Maton before he signed with the Cubs.

Seattle had a decent bullpen group in 2025. Their relievers had a collective 3.72 earned run average, which was ninth in the majors. Andrés Muñoz is one of the better closers in the game. But just about any club can add an extra leverage arm or two and bump other guys down a peg. That’s particularly true for the Mariners from the left side, as Gabe Speier is their only established southpaw reliever at the moment. Robinson Ortiz is the other lefty reliever on the 40-man but he hasn’t yet made his major league debut.

It’s unlikely that the club will spend a lot on the relief group. President of baseball operations Jerry Dipoto suggested that the M’s will likely begin 2026 with a similar payroll to where they were at the end of 2025. RosterResource estimates that they are currently about $15MM shy of that target. They already re-signed Josh Naylor but could look to further bolster the infield by re-signing Jorge Polanco or Eugenio Suárez. Jude unsurprisingly suggests the M’s aren’t likely to go after a big name reliever like Edwin Díaz or Robert Suarez.

Strahm, 34, is the most established of the bunch. He now has ten big league seasons under his belt. Though he has pushed into his mid-30s, he has remained effective. He just tossed 62 1/3 innings for the Phils this year, allowing 2.74 earned runs per nine. His 7.8% walk rate was a bit better than average and his 27.3% strikeout rate was quite strong. He triggered a vesting option in his contract and will make $7.5MM next year.

All that makes him attractive for the Mariners but also valuable for the Phillies. It’s possible the Phils may be willing to move a lefty due to a relative surplus. They have reportedly received some trade interest since they have Strahm, José Alvarado and Tanner Banks. The Phils have a lot they want to accomplish this winter, including re-signing Kyle Schwarber and J.T. Realmuto while also remaking their outfield and perhaps bolstering the rotation. They have some money to spend but perhaps trading one of their lefties could leave them less reliant on spending their cash.

Romero, 29, is a much more straightforward trade candidate. The Cardinals are rebuilding and he is just one year away from free agency. MLBTR contributor Matt Swartz projects him for a salary of $4.4MM next year. Over the past three years, he has tossed 156 2/3 innings for the Cards with a 2.93 ERA, 22.9% strikeout rate, 8.5% walk rate and 53.3% ground ball rate.

Ferrer, 26 in March, is also on a rebuilding club. However, he’s under club control for four more years and hasn’t yet qualified for arbitration, so the Nats don’t really need to trade him anytime soon. They are surely hoping to return to contention within his window of control but they may be open to a trade anyway, given that a pitcher can get hurt at any time and reliever performance tends to be volatile.

In Ferrer’s career, he has an unimpressive 4.36 ERA but that might mask his true skills. He is a ground ball guy and the Nats have been one of the worst defensive clubs in recent years, so perhaps a change of scenery would help him unlock a new gear in terms of run prevention. In 76 1/3 innings for the Nats this year, his 21.9% strikeout rate was just shy of league average. His 4.9% walk rate and 62.6% ground ball rate were both excellent. His 4.48 ERA doesn’t look great but his 3.03 FIP and 2.85 SIERA provide more optimism about him thriving in a different environment.

Milner, 35 in January, has a somewhat similar grounder-heavy profile to Ferrer. He has logged at least 64 innings in four straight seasons now. Over that 2022-25 span, he has thrown 264 frames with a 3.55 ERA, 22.6% strikeout rate, 5.8% walk rate and 51.1% ground ball rate. Despite the solid track record, he was only able to secure a one-year, $2.5MM deal from Texas last winter. Perhaps he’ll have some extra earning power after finishing another solid season but he’s also a year older.

Rogers, 35 this month, is one of the most unique pitchers in the game. Not to be confused with his lefty brother Taylor, Tyler is the submarining righty. He doesn’t rack up strikeouts but he is one of the best in the game when it comes to staying healthy, avoiding walks and inducing grounders as well as soft contact. He has logged at least 70 innings in five straight campaigns. Dating back to the start of 2021, he has 378 1/3 innings with a 2.71 ERA, 17% strikeout rate, 4.4% walk rate, 56.3% ground ball rate and consistently strong numbers in terms of exit velocity allowed. He is a free agent for the first time and should be in high demand but some teams may be scared off by his age and lack of velocity, as he can barely even get into the 80s with his fastballs.

Photo courtesy of Jayne Kamin, Oncea-Imagn Images