Mayo hit 098/196/098 (-6 wRC+) with a 47.8 K% in 46 MLB PAs last year.
He followed that up by hitting 190/239/262 (29 wRC+) in 46 spring training PAs.
His first 54 PAs at AAA this year are 196/278/326 (68 wRC+).
Small samples all around, but dude is pretty much living on name value alone until he starts hitting again.
FanGraphs just dropped their Orioles list today, here's what they had to say...
"Mayo had a five-year track record of mashing dating back to high school before elevated strikeouts began to creep into his profile once he was promoted to Double-A. Since arriving in Bowie and then Norfolk, his K% has hovered around 25%, while Mayo’s underlying contact rate has slowly dipped into a problematic range, from 75% to 73% to 70%, as he’s progressed up the minor league ladder the last three years. Mayo’s funky, pull-heavy swing generates enormous pull-side power and loft, and he’s on time to destroy fastballs (his splits against plus velocity are great) even though he’s a massive, long-levered 6-foot-4 guy. His tendency to pull off toward the third base side has left him very vulnerable to sliders on the outer half, and as Mayo has faced more sentient pitching at the upper levels, this has been more consistently exploited.
In spite of this, Mayo crushed Triple-A (.287/.364/.562) at age 22, including after he returned from a month-long IL stint due to a fractured rib. He looked positively lost during his 17-game, late-season big league call-up to Baltimore, during which he K’d in nearly half of his plate appearances, and a measure of that has continued in the early going of 2025, both during spring training and at the start of the International League schedule. Mayo is starting to have a more polarized power-over-hit offensive profile, where his projected output looks more like Chris Carter and Luke Voit. Even as he has struggled, his contact rate (70%) has still been a shade better than those guys, and Mayo’s strength and extreme pull approach should allow him to get to enough of his immense power to profile as a 2-WAR type of first baseman. But Mayo’s swing is really funky looking. It has worked for him his entire career, but there have been scouts that whole time who were skeptical it would work in the big leagues, and what’s happening with Mayo right now is what it would look like if they’re right.
Mayo’s size makes it hard for him to move around at third base, and he has been speculatively projected to right field here at FanGraphs since before he was drafted because that’s the position that best takes advantage of his plus, max-effort arm strength. The Orioles have shown no inclination to try Mayo out there and began to deploy him at first base semi-frequently starting in 2023; he played about 20 games there each of the last two seasons, and has played first and third fairly evenly at the start of 2025. If Mayo can successfully play a more valuable position than first base, it will take pressure off the need for him to resolve his issues on offense."