Meet Seuly Matias, one of the most prolific home-run hitters in professional baseball this season.

If you’ve never heard of him, don’t be ashamed — this minor league Babe Ruth has been hiding out in Kentucky, mashing dingers for the Lexington Legends. But with the way he’s hitting, he might not be able to hide for long. Here are North America’s HR leaders across all affiliated levels of play.

Player HR PA Mike Trout (MLB) 23 327 Seuly Matias (Class A) 22 223 J.D. Martinez (MLB) 22 299 Jose Ramirez (MLB) 21 318 Khris Davis (MLB) 20 276 Bryce Harper (MLB) 19 310

Matias’ numbers this season for Class A Lexington, an affiliate of the Kansas City Royals, have been nothing short of mindboggling. Matias has hit as many HR as J.D. Martinez in 76 fewer plate appearance. He leads all minor league baseball by four home runs; the gap between Matias and second place in MiLB play is as large as the gap between second and thirteenth. The kicker? Matias is just 19 years old.

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It is extraordinarily difficult to underscore Matias’ power this season. The South Atlantic League, where Matias plays, is very much a pitchers’ league. Leaguewide in 2018, the SAL has posted a .133 Isolated Slugging (ISO) — almost thirty points lower than MLB’s ISO this season (.161). In leading the major leagues in HR, Trout has an ISO .197 higher than the average MLB ISO. Matias’ ISO, however, is .255 higher than that of the SAL.

This is not to imply that SAL pitching is anywhere close to the quality of MLB pitching, but it contextualizes Matias' dominance in terms of power compared to the rest of his league.

Matias' power is unlike anything the SAL has seen in recent seasons. I pulled the list of SAL ISO leaders since 2006.

Hitter Year SAL ISO Seuly Matias 2018 0.388 Darick Hall 2017 0.262 Yermin Mercedes 2016 0.226 K.J. Woods 2015 0.219 Travis Dermeritte 2014 0.239 Joey Gallo 2013 0.365 Corey Dickerson 2012 0.347 Jared Clark 2011 0.241 Brian Pellegrini 2009 0.288 Giancarlo Stanton 2008 0.318 Ryan Royster 2007 0.272 Sergio Pedroza 2006 0.281

The guys who really dominated the league — Stanton, Gallo, and Dickerson — combined for 127 home runs last in the MLB last season. Matias is mashing harder than them in the SAL in his young season.

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Matias may have one of the most developed power tools in the minor leagues. Matias’ raw power potential was graded by FanGraphs at a 70 on a scale from 20-80 , indicating excellent power potential, ranking among some of the top prospects in the minors. Matias’ recent power surge suggests that not only has his power matured, but it may be even better than previously thought.

As exciting as Matias’ sudden power surge is, Royals fans should put down their phones before calling their local congressmen to demand that Matias be called up: Matias still has a lot of kinks to be worked out.

For example, Matias’ strikeout rate is hanging in around 36.8 percent — the 11th worst figure in the MiLB and worst in the SAL. Scouts have questioned his ability to make contact, Adam McInturff wrote that scouts doubt Matias’ “ability to make consistent contact” and described him as “struggl[ing] to recognize off-speed pitches.” Matias has recorded whiffs on 22.3 percent of all his pitches this season, a figure that would be the worst in the major leagues by 3.7 percent.

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Matias has also been a ground-ball pull hitter for most of his career: before 2018, Matias had run a 45.6 percent groundball rate on his batted balls, and tended to pull his batted balls more than 40 percent of the time. Defensive shifts are not as prevalent in the lower minor leagues as they are in the major leagues, so if he fails to elevate consistently or spray the ball, Matias might see a substantial portion of his production from batted balls vanish with the shift as he climbs the rungs of the Royals' farm system.

Matias has turned the SAL into his own personal home run derby, so it should be appointment viewing when he steps up to the plate. If Matias can keep developing and maturing as a hitter — and he has plenty of time to do so — he might be one of the most exciting hitters to come up for the Royals in a very long time.