Mondesi has been suspended 50 games after testing positive for the performance enhancing drug Clenbuterol, Jon Morosi of MLB.com reports.
Mondesi, the top prospect in the Royals' system, was off to a strong start to the season at Double-A Northwest Arkansas, slashing .250/.304/.462. He also had hit five home runs through his first 113 plate appearances this season, while his previous career high in that category was eight when he was at High-A Wilmington in 2014. It took him 472 plate appearances to hit those eight home runs in 2014. According to Sam Dykstra of MiLB.com, Mondesi will not be eligible to play in the 2016 postseason for the Royals if they qualify.