Fantasy baseball Prospect Watch: Heaney baffling Double-A hitters

Andrew Heaney may be making a major-league start for the Marlins sooner rather than later.

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It may be in vogue, as well as prudent and cost-effective, to bury top prospects in the minors until June to lengthen team control, but the Marlins have never really subscribed to that course of action. Jose Fernandez started the year in the majors last year despite never pitching above High-A ball. Heaney also arrived in professional baseball more advanced than most of his fellow top pitching prospects. Of the 15 pitchers ranked in the top 30 of MLB.com's best 100 prospects, only Heaney, Jon Gray, Mark Appel, Kyle Zimmer, Alex Meyer and Kevin Gausman attended college. With Jacob Turner hurting and the final two spots in the Miami rotation manned by Tom Koehler and Kevin Slowey, the Marlins could soon make room for their dynamic 22-year-old lefty currently baffling Double-A hitters. Those of you in deeper mixed leagues should think about stashing him right now. It will be too late once he gets the call.

Jon Singleton already has 25 RBI for Triple-A Oklahoma City this season.

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• Kris Bryant, the Cubs first round pick last year, continues to rake at Double-A Tennessee. Through 75 plate appearances, he's hitting .311/.440/.590 with four homers, 10 RBI and four steals. The 22-year-old features highlight reel power, and it's just a matter of time before he's doing his thing at Wrigley Field. He still has a late-2014/early-2015 ETA, however, so he's only fantasy relevant in dynasty leagues and deep keeper leagues. He will likely see time at Triple-A Iowa before getting the call to the majors.