Seattle Mariners

The minors' most dominant arm in 2026 — 1.20 ERA, 119 K in 82.1 Double-A innings — is on the brink of a callup. GM Hollander said he's 'definitely in the mix' after the Castillo trade opened a rotation slot. He will start, not relieve. Add him in every league where he's available. This is the kind of callup that wins championships.

Young is hitting .354 since the All-Star break with nine runs, three homers, and eight RBI while posting a sub-9% strikeout rate. The underlying improvements are real: his barrel rate has climbed from 5.6% in 2025 to 8.1%, and hard-hit rate jumped from 31% to 41%. Add in 12-team OBP leagues and 14-team standard formats where shortstop is a position of need.

Started vs Detroit Tigers (7W-8L, 4.56 ERA)

Six blown saves and a 4.60 ERA put his role on thin ice. The Mariners haven't pulled him yet, but another high-leverage failure could trigger a committee. Jose A. Ferrer is the name to watch as a potential beneficiary.

Full-time middle-of-the-order bat in Seattle with elite underlying metrics — 14.8% barrel rate, 48.3% hard-hit rate. The low batting average keeps him off radars, but the power is real and sustainable. Mariners GM Jerry Dipoto publicly committed him to the lineup. Add in 10+ team leagues.

Anderson is running one of the best minor-league pitching lines in baseball — 9-1, 1.27 ERA, 0.64 WHIP, 115 K in 77.2 innings — but is stuck behind a healthy Seattle rotation. Trade deadline maneuvering is reportedly targeting Mariners arms (Luis Castillo, Emerson Hancock), which could open a rotation slot at any moment. NBC Sports called him 'next in line' after Max Clark's debut. His ceiling is Skenes-level — add him now in all deep formats before the door opens.

Anderson has been called 'arguably the most dominant pitcher in professional baseball this season' by CBS Sports — in the minors, where he's posted a 1.36 ERA, 0.69 WHIP, and 37.5% K-BB% across 72.2 innings. He's not a sure-shot callup right now, but at roughly 8% Yahoo ownership, the cost of stashing him in an NA slot is zero. If Seattle needs rotation help in the second half and promotes him, you already own him. Monitor his prospect timeline weekly.

7-day concussion IL, placed July 3 after taking a throw off the back of his helmet on a double-play attempt vs the Angels on July 2. Eligible to return today; Mariners host Tampa Bay this weekend. Return expected before the All-Star break.

Placed on the 7-day concussion IL after taking a throw off the back of his helmet on a double-play attempt. Eligible to return Friday, July 10. Don't drop him.

Placed on the 7-day concussion IL after a throw struck him in the back of the helmet while sliding into second base Thursday night. Must clear concussion protocol before resuming any baseball activities. No official return timeline; earliest realistic return is around July 14–15. Miles Mastrobuoni was selected from Triple-A Tacoma in the corresponding move.

The 2025 third overall pick (LSU) is the best pitcher in professional baseball right now. Anderson owns a 1.22 ERA, 2.34 xFIP, and 99 K to just 9 BB in 66.2 innings at Double-A — leading all of minor league baseball in ERA, xFIP, K/BB, K-BB%, and WHIP. June alone: 0.79 ERA, 32 K, 3 BB in 22.2 innings. He has been named to the All-Star Futures Game and is expected to reach Triple-A Tacoma next, with a potential Seattle debut before season's end. His four-pitch mix (plus fastball, plus curveball, plus slider, changeup) projects to an immediate SP2 in the majors. Grab him in all redraft formats with a bench spot — the promotion is coming.

Placed on the 10-day IL June 19 with a left hamstring strain after MRI showed more inflammation than expected. No return timetable. Originally hoped to miss only a few days; imaging changed that calculus. Mariners activated High-A OF Curtis Washington as emergency depth.

Slashing .333/.398/.707 over the last 30 days with 7 home runs and recently moved into the cleanup spot in the Mariners' order. He is one of the hottest bats in baseball right now and is still under 40% owned. The lineup promotion is the critical detail — cleanup at-bats mean more RBI chances every night.

Muñoz converted just two of his last five save opportunities and has allowed a run in three of those five outings — a jarring departure from a 2025 season in which he allowed only two home runs across 62+ innings. He remains Seattle's primary closer and the talent is unquestionable, but the June blip is significant enough to monitor. If José Ferrer earns a ninth-inning chance while Muñoz is struggling, the committee risk in Seattle becomes real. Hold firmly but keep eyes open.

Left hamstring strain, placed on the 10-day IL Tuesday retroactive to June 14. Arozarena exited Friday's game against the Nationals and an MRI revealed more inflammation than the Mariners anticipated. GM Justin Hollander indicated the team does not expect a stay beyond the minimum, making a June 24–25 return plausible. Victor Robles and Rob Refsnyder are handling outfield depth while he is out.

Five blown saves in 2026 and a career-worst hits-per-nine rate, yet the Mariners have not moved off him. With Matt Brash now on the 15-day IL, there is no obvious alternative. Muñoz converted a save earlier this week and his slider grip issue — which he disclosed in April — has shown incremental improvement. Hold if you own him; do not overpay to acquire him.

Five blown saves and a career-worst 8.9 hits per nine innings in 2026, yet the Mariners have not moved toward replacing him. His slider grip issue — something he disclosed himself in April — has shown incremental improvement and he converted his first save since May 22 just this week. With Matt Brash now on the IL and the Seattle bullpen thinned out, Muñoz's hold on the role is secured partly by default. Hold him if you rostered him; do not overpay to acquire him right now.

Placed on the 15-day IL with a lat strain, retroactive to June 9. Brash has been a key high-leverage arm for Seattle in 2026. His absence further thins the Mariners' bullpen behind Andrés Muñoz, who is already dealing with command issues and five blown saves on the year. The lat strain timeline is typically 3-6 weeks.

Right oblique strain placed Raleigh on the IL May 14. He begins a rehab assignment today (June 7) with High-A Everett as the designated hitter — a structured approach that protects the oblique while keeping his bat active — before transitioning to Triple-A Tacoma on June 9. Projected return: around June 16.

Seattle's top prospect and MLB's largest pre-debut contract ($95M/8 years) is earning every penny: .354 OBP, .595 SLG, three homers, seven extra-base hits in his first 14 games. The youngest Mariner to debut since Félix Hernández. If he's still on wires in your 8–10 team league, fix it today.

Two MLB weeks in and starting every day for Seattle. The batting average (.200) is misleading for someone who posted elite contact and on-base rates in the minors. Hitting ninth in front of Seattle's top of the order generates steady run-scoring opportunities. Pick him up in 14+ team leagues before the ownership spike that's coming.

4 blown saves, 4.98 ERA, 1.34 WHIP across 21.2 IP. Both his four-seamer (.477 wOBA against) and sinker (.538 wOBA against) are getting punished. Matt Brash and Jose Ferrer are waiting with closing experience. The Mariners haven't intervened yet, but this situation is deteriorating quickly.

2nd blown save this week — Closer Monkey flags him as overworked. The Mariners may rest him for a game or two; Jose A. Ferrer is the next-up. Hold but monitor the next 2 outings; if he settles, the role is fine.

ACTIVATED: Mariners activated Brash from the 15-day IL Tuesday. He's been out since March with a hamstring issue. His pre-injury upside (top-10 RP material in 2024) is intact; he'll work setup behind Andrés Muñoz initially but is the next-up if Muñoz slips. Hold in deep leagues; speculative add.

Started vs Chicago White Sox (0W-0L, 3.38 ERA)