Since joining the RotoGraphs team, I’ve discussed two minor leaguers who were (at the time) leading the minors in a fairly notable stat category. There was Micah Johnson with his stolen bases, and Ryan Rua with his home runs.

Today, I’m going to talk about another player leading the minors in something: righthanded pitcher Matt Koch, who sports a 61/2 strikeout-to-walk ratio. No, K/BB ratio isn’t a fantasy category in many leagues, but it’s also a broad stat that encompasses a lot of ability, so such dominance merits a closer look into Koch’s skillset.

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Last week, I examined unlikely minor league stolen base leader Micah Johnson, whose 58 swipes in the Low-A South Atlantic League have propelled him past some better-known base thieves (Billy Hamilton, Rico Noel, Byron Buxton, Roman Quinn, and Delino DeShields Jr., just to name a few) to a double-digit lead in the category. By now, Johnson–ranked among Chicago’s top 30 prospects by Baseball America entering the season and also sporting a hefty batting line–has started to gain publicity. It is less known, however, that the SAL also houses the current minor league home run leader: Hickory’s Ryan Rua, who has amassed 24 blasts, one ahead of highly-touted teammate Joey Gallo and well-traveled minor league slugger Mauro Gomez.

As with Johnson, Rua’s ascent to the top of the homer leaderboard was tough to foresee. He was a 17th-round pick in 2011 out of Division II Lake Erie College, where he had 27 homers in a three-year career. In 126 career professional games before 2013, all at short-season levels, he had just eleven homers. He had a very good .191 Isolated Power in rookie ball and a more pedestrian .136 in short-season-A play.

That lack of a track record, as well as Rua’s somewhat advanced age (he’s 23), may lead some to dismiss him as irrelevant for prospecting purposes, let alone fantasy ones, if not for one very important fact.

He plays second base.

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Entering the 2013 season, it was seemingly a foregone conclusion that Billy Hamilton would lead the minors in steals for a third straight season, assuming he was healthy and was not promoted to the big leagues. After all, Hamilton swiped 27 more bags than any other minor leaguer in 2011 and 64 (!) more than the second-place finisher (Delino Deshields Jr., who himself had 101) last year.

Hamilton has indeed stayed healthy and played the entire year in the minors, but his stolen base throne has surprisingly been usurped; his still-whopping 42 steals in 67 games ranks third in the minors (fourth if you count the Mexican League), a full dozen behind White Sox second base prospect Micah Johnson, who has blazed his way to 54 thefts in 66 contests.

Anybody who produces that sort of stolen base volume will pique the interest of deep keeper fantasy owners, especially when the player in question is a middle infielder with a robust .339/.422/.525 triple-slash. But how much of Johnson’s production is true substance?

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