It's been a terrific start to 2026 for one of the top rising prospects in the Toronto Blue Jays' system. 22-year-old Sean Keys has been smashing the ball since the Eastern League got underway and the New Hampshire Fisher Cats, the Double-A affiliate of the Blue Jays, are happy to have Keys as part of their club this season.
The left-handed hitting third baseman / first baseman made the jump from High-A Vancouver to Double-A this year and he's slashed .338/.449/.800 with nine home runs in 78 plate appearances through his first 17 games of the season (through Apr. 28). So it makes you wonder, how he was left off the FanSided Top 100 prospects list?
Well, for starters, picking out 100 prospects ins't an easy task, so we'll let it slide a little bit. Keys is also not even a top ten prospect on his own team and wasn't drated within the first three rounds of the draft, making him easy to overlook. But what he's done so far this year can't be ignored for too much longer.
Keys could be one of the hidden gems of the Blue Jays system
Keys' power has been extraordinary. While it's not like it has come out of nowhere, considering he hit 19 home runs a year ago in 119 games with Vancouver, this is an impressive display for the Blue Jays' No. 17 prospect. He profiles as a guy who should develop a big swing that will play at the big league level, as long as he can be consistent with it. He is still a work in progress defensively and so he will rely on his slugging to carry him to the upper levels of the minor leagues.
No problem there as he's started 2026 by producing a 46.7% fly ball percentage and a 206 wRC+. Only three players in all of minor league baseball, with a minimum of 70 plate appearances, has a higher wRC+ than he does. His Isolated Power is an absurd .462 while his BABIP sits at .361 and his OPS is 1.249.
These numbers are primed to come down, but how far they will fall before Keys gets moved up to the next level is anybody's guess. Keys is making contact on 72.5% of the pitches he swings at and everything he's hitting is hit hard and seemingly finding a hole, or the other side of the fence.
Eight of the guys ahead of Keys on the Blue Jays' prospect list are pitchers. The other eight include No. 2 JoJo Parker who was named on the FanSided list, ranking in the Top 50. There's also No. 3 Arjun Nimmala, No. 7 Juan Sanchez, then No.'s 9-13 include four outfielders RJ Schreck, Yohendrick Pinango, Jake Cook and Victor Arias and infielder Josh Kasevich. Rounding out that group of eight is outfielder Blaine Bullard. But none of those guys is off to as hot of a start as Keys is, making him deserving of a spot within baseball's Top 100.