Sean Keys is turning heads in Double-A, and for good reason. Among the 87 hitters in the league with at least 100 plate appearances this season, the Blue Jays' 2024 fourth-round pick owns the best batting line. That's no small feat for a player who entered pro ball with questions about the level of competition he faced at Bucknell.

Keys put up monster numbers in college, but the Patriot League isn't exactly known for producing top prospects. What caught scouts' attention was his performance in summer wood bat leagues, especially a standout stint in the prestigious Cape Cod League just before his draft year. After signing with Toronto, his initial pro stops in Dunedin and Vancouver showed solid but unspectacular results. His patient approach led to plenty of walks, but the power was more good than great.

Fast forward to 2025, and everything is clicking. Playing home games at New Hampshire's Delta Dental Stadium—a ballpark that favors left-handed power—Keys is putting up video game numbers: .310/.429/.667 with nine home runs in just 24 games. The underlying metrics always suggested he was doing the right things, and now the results are matching the process.

At the heart of Keys' game is his power. While his raw strength grades as solid average or slightly better, his uppercut swing is designed to pull the ball in the air, giving him a chance to produce plus game power. Standing 6'2" and 230 pounds, he's built to generate that pop without over-swinging. His swing is simple and direct, featuring a subtle toe tap and a clean path to the ball.

This season, Keys has quieted his pre-swing movement and opened his stance slightly, adjustments that appear to be paying off. He can look a bit stiff, especially in his two-handed follow-through, but he's shown the ability to make consistent contact. Last year, his 78% contact rate was above average. It's dipped to 72% in 2025, partly due to a more aggressive approach and tougher competition.

The biggest question mark? Whether he can handle premium velocity. Keys doesn't have elite bat speed, and good fastballs up in the zone have given him trouble. The swing tweaks may be an attempt to address that. If he can consistently catch up to MLB-caliber heat, the offensive upside is significant. For now, he's one of the most intriguing power bats to watch in the minors.