Johnson was promoted to the Red Sox for his start Friday.
In a corresponding move, Boston optioned Brandon Workman back down to Triple-A Pawtucket. This marks the third start of the year for the left-hander after tossing a complete game shutout in his last appearance against the Mariners. The 26-year-old last saw the mound June 3 for Pawtucket, striking out five and allowing two hits in under two innings against Durham.