The first thing Johnson did when he got the news shortly after midnight Saturday was wake up his parents.
"I think I had every emotion you could have," said Johnson. "Calling my parents [Friday] night, it was awesome. I woke both of them up. They were very, very excited. I was excited and confident."
This is Johnson's first callup to the Majors and he hopes to do as well as Eduardo Rodriguez, who has turned in several strong performances since being promoted to the Majors in late May.
"Since I was five years old, this is your goal, to get here," said Johnson. "Watching Eduardo go up there and have such success every outing is awesome and it gives you confidence."
The 24-year-old Johnson is 8-6 this season with a 2.73 ERA (26 earned runs in 85 2/3 innings) and 81 strikeouts.
"One thing he showed right in Spring Training was a willingness to attack the strike zone with three pitches," said Red Sox manager John Farrell. "He's got a couple breaking balls he can get some swing and miss to. The experiences at the higher level have allowed him to face older hitters, more experienced hitters that might sit on certain pitches, but I think it's his overall competitiveness in addition to the repertoire mentioned that make him equipped."
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, follow him on Twitter @IanMBrowne and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.