The Mariners are making a move at shortstop, optioning Colt Emerson to Triple-A and calling up infielder Brock Rodden, according to Ryan Divish.
It’s a reset for Emerson, who has been overwhelmed at the plate and shaky in the field during his first taste of the majors. The 21-year-old has long been known for limiting strikeouts in the minors, where his career strikeout rate sat around 17%, but that has not carried over. In the big leagues, he’s striking out at double that rate and has had a hard time handling fastballs in particular.
High heat has been the biggest problem. Emerson has struggled to catch up to big-league fastballs, especially when they’re in the zone, and he’s striking out on fastballs more than 50% of the time.
His bat-tracking data backs up what the eye test has shown: he’s often late, and too often swinging under pitches instead of staying on plane. He’s also had trouble with breaking balls and off-speed stuff, though the fastball issue has been the one pitchers keep leaning on.
That’s a lot to ask of any rookie, and even more so for a 21-year-old playing shortstop, one of the toughest defensive jobs on the field. Emerson was brought up to help cover for the injured left side of the Mariners infield, but the adjustment has been rough on defense too.
In the minors, he was steady. In Seattle, he’s flashed the athleticism that made him a prospect worth watching, but he’s also missed routine plays that have become a recurring problem.
He can make the spectacular play. The routine ones have been the issue.
Perry Hill calls those plays “in the box,” and Emerson hasn’t been clean enough on them, with mistakes in footwork and transfers showing up more than they did in the minors. The game moves faster at this level, and Emerson has looked like a young infielder feeling every bit of that speed.
The Mariners have seen a version of this before. Cole Young went through a similar transition last season, and Seattle eventually gave him a breather before replacing him with Jorge Polanco for the playoff run. The difference now is that Emerson’s struggles have been more visible because the team around him hasn’t been producing.
The hope is that Triple-A can give Emerson a chance to slow things down, breathe, and get back to the player he was before the majors started pressing on him. He has tried to stay positive and stick to his approach, but this has clearly been a frustrating stretch for him.
The move also makes sense for Seattle’s current situation. With the lineup inconsistent and Emerson becoming a drag in the nine-hole, the Mariners needed a change.
J.P. Crawford remains out with wrist soreness and has no timetable for a return, so Rodden gets the call.
Rodden, known around LL as “The Brocket Ship,” was a fifth-round pick in 2023 out of Wichita State. Injuries have slowed him, but he has produced at every minor league stop and has typically posted an on-base percentage around .350. He’s 5-foot-9, switch-hits, and his jersey is always dirty, the kind of player who can win over fans fast.
There’s more to his game than hustle, too. Rodden can play all over the infield and won a minor league Gold Glove at second base in 2024.
He’s also shown surprising power for his size, with 19 homers at Triple-A this season after hitting 14 in Double-A in 2024, his last fully healthy season. Standard PCL caveats apply, but he’s also hit some that were clearly not cheapies.
With Crawford still sidelined, Leo Rivas is likely to get most of Emerson’s starts. Rodden, though, should get a real chance to show what he can do.
His on-base ability could help a Mariners lineup that has had trouble stringing offense together and putting runners on base. He brings energy, speed, and a switch-hitting profile that could lengthen the order.
Defensively, the Mariners have options. Second base is Rodden’s natural spot, though he has also played third and short for Tacoma this season.
Cole Young can handle short, and Rodden could even be used at third to give Brendan Donovan a break. However they deploy him, the Mariners are hoping his minor league production carries over and gives a struggling team a needed lift on both sides of the ball.
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