One of the big breakout hitters across Minor League Baseball this season has been Blue Jays prospect Sean Keys. And after 21 home runs between Double-A and Triple-A this season, Keys is set to be rewarded with his first big-league promotion.
A Look at Keys
It’s not often that players from Bucknell University in the Patriot League make it to the Majors. The last one to do it was former Rockies pitcher Matt Daley, who made his debut in 2009. Now, it’ll be Sean Keys‘ turn, as the Long Island, New York native ran through the Minors with impressive speed.
A fourth-round pick in 2024, Keys slashed .293/.378/.451 in Low-A ball after he was drafted two years ago. Last season, Keys slashed .217/.385/.408 with High-A Vancouver. One would think those numbers were underwhelming given the low batting average — but they were not. Keys walked 86 times, sported a lower swing-and-miss rate, and hit 19 home runs for the Canadians.
In 2026, Keys turned the positives into peripheral results. The 23-year-old hit 14 home runs over 49 contests with Double-A New Hampshire, then blasted seven over 18 contests (11.1% Barrel% through 6/21) with Triple-A Buffalo before his promotion.
To say that the power profile for Keys is intriguing would be an understatement. Keys was one of the best in the Eastern League over the last seven weeks — even though he was promoted weeks ago to Triple-A — before the end of the first half in terms of Pull FB%, a good metric that determines A) how effectively a hitter can elevate and B) drive it with efficiency.
His 14.9% Pull FB% in that league was fourth-best in the circuit. One of the three ahead of him was, oddly enough, Pirates prospect Jack Brannigan. Brannigan was promoted to the Majors on June 26.
Open stance, not a complete follow-through, but natural, above-average power.
Keys took his walks, with 39 over 286 plate appearances this season between Double-A and Triple-A. With New Hampshire, Keys didn’t take a ton of pitches (roughly 50% of the time) — but he doesn’t swing through balls too much. That makes sense of the fact that, once he moved up to Triple-A, he was able to sustain a 30.5% Chase%, yet work a lot of pitches per plate appearances.
Defensively, Keys played a roughly split amount of times between first and third base this season.
Per reports out of Canada, the Blue Jays are expected to promote and activate Sean Keys by June 27.
Analysis
After a 21-home run season in the Minors so far, the Blue Jays have decided to be more aggressive with Keys, who showed far more polish than usually seen from players who come from mid-major universities. But, in some cases, the numbers don’t lie.
It’s going to make for an interesting balance of the Blue Jays’ lineup moving forward. Keys won’t supplant either Vladimir Guerrero Jr. or Kazuma Okamoto, obviously, while the DH spot has belonged to George Springer.
Springer, who hasn’t hit well this season, hasn’t played the field at all this season. And as things stand right now, the Blue Jays’ outfield currently includes Nathan Lukes, Daulton Varsho, and Jesús Sanchez, the usual setup versus right-handed pitchers.
However, for a Blue Jays’ offense that ranked in the bottom half in several categories, Keys is the kind of player who, for right now, could offer a spark in spots. As noted earlier, the power is legitimate.
Check out more of our MLB coverage, including a look at newly-promoted infielder Cooper Ingle.