Johnson left Sunday's game with Low-A Bradenton in the sixth inning with a calf cramp, Kevin Gorman of TribLive.com reports. He went 2-for-4 with a home run and a double in Bradenton's 9-4 win over Dunedin prior to his departure.
The fourth overall pick in last year's draft, Johnson is starting to live up to those lofty expectations. He's now homered in four of his last five games, including Sunday prior to his exit. Johnson's calf issue doesn't sound like anything that will derail his rhythm at the plate, but if the Pirates have any concerns with his health whatsoever, they will play things cautiously.