The Seattle Mariners are making a move that has many fans scratching their heads. Why would they sign a catcher with underwhelming stats and a questionable defensive track record? But here's where it gets interesting: the team is reportedly finalizing a deal with veteran catcher Andrew Knizner, a player whose career has been a rollercoaster of promise and disappointment. And this is the part most people miss: there might be more to this signing than meets the eye.
According to Daniel Kramer of MLB.com, the Mariners are inking Knizner to a major league deal, likely a league minimum-adjacent contract that allows them flexibility. At 30 years old (turning 31 in 2026), Knizner brings experience from stints with the St. Louis Cardinals, Texas Rangers, and San Francisco Giants. However, his career numbers—a .211/.281/.316 slash line and a -1.7 fWAR across 326 games—don’t exactly scream impact player. Even alternative metrics like Baseball Reference’s 1.0 bWAR or Baseball Prospectus’ -0.1 WARP paint a modest picture. Is this a low-risk gamble or a missed opportunity?
Knizner’s journey hasn’t always been this way. Drafted in the 7th round in 2016, he was once a highly regarded prospect, ranking 82nd on FanGraphs’ top-100 list in 2019—sandwiched between Will Smith and Jarred Kelenic. His offensive prowess at NC State and in the Cardinals’ system had many believing he’d succeed Yadier Molina in St. Louis. But after a rocky big league debut in 2019, Knizner’s career stalled, with inconsistent playing time and underwhelming defensive skills, particularly in framing and blocking pitches. Even his brief stint as a starter in 2023 failed to impress, despite a slight offensive uptick.
But here’s the controversial part: Why are the Mariners pursuing Knizner? His ability to hit the ball hard—once above-average—has vanished in recent years, and his defense remains a weak point. Yet, Seattle has a history of valuing lefty-hitting backup catchers, as seen with Mitch Garver, Tom Murphy, and Luis Torrens. Could they see untapped potential in Knizner, or is this a depth move with minimal expectations? Watching him swing, there’s a faint resemblance to Garver’s style, but the results haven’t matched the promise.
While Knizner’s career hasn’t lived up to early hype, teams have consistently given him chances. Perhaps the Mariners believe they can refine his skills, turning him into a serviceable southpaw threat. However, without significant improvement, he risks becoming more Seby Zavala than Tom Murphy. Is this a smart investment or a long shot? Let us know your thoughts in the comments—do you think Knizner can turn his career around in Seattle, or is this signing destined to be forgotten?
