Lazaro Montes has wasted no time showing why he sits near the top of the Mariners’ prospect conversation. In fewer than 20 games since his debut, the young slugger has already flashed the kind of power that can make people stop and stare.
The raw pop is undeniable. His bat speed is said to be on par with Ronald Acuña Jr., his average exit velocity is just a shade above Pete Crow-Armstrong’s, and his xSLG of .535 would rank sixth in the league, trailing only Shohei Ohtani and Pete Alonso. He’s also already launched the longest home run at T-Mobile Park in the Statcast era, which is about as loud an introduction as a hitter can make.
Lazaro Montes hit one WHERE?!?! pic.twitter.com/uYM8mtlNYD
- MLB (@MLB) September 9, 2026
That said, the power comes with some obvious growing pains. If Montes is going to fully justify the Yordan Alvarez comparisons that have followed him for the last two years, he’s going to need to sharpen the rest of his offensive game.
Right now, opposing pitchers have found a clear path to attacking him. Montes is striking out 45.2% of the time, posting a 47.3% whiff rate and a 63.2% zone-contact rate, all of which sit in the first percentile among hitters. And the scouting report is starting to feel pretty simple: challenge him with fastballs.
His whiff rate against four-seam fastballs is 47.1%, and he’s missing even more often against sinkers. Pitchers have been coming right after him with velocity, and for now that’s been a problem he hasn’t solved.
He has at least shown some discipline. Montes is chasing pitches at a league-average rate and owns a 9.5% walk rate, so the issue isn’t just him expanding the zone.
The bigger problem is what happens when the pitch is firm. He still hasn’t recorded a hit against a pitch at 95 mph or faster, and three of his four home runs have come against pitches slower than 90 mph.
There are more holes to patch than just the contact issues. Montes is 0-for-11 against left-handed pitching with a .000 OPS, which has kept him mostly out of the lineup when a southpaw starts. That kind of split makes it hard to see him as a lineup staple just yet, no matter how loud the power is.
Even with those flaws, Montes has already given the Mariners plenty to dream on. Young hitters always need time to adjust, and he’s shown enough of the upside to make the wait worthwhile.
Like Kade Anderson, he’s already proven what he can do when everything is clicking. It may still take a few seasons before he can help carry this offense on his own, but getting him into next year’s roster would be a meaningful step in the right direction.
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