The 24 - year - old right - hander ended up missing his next start on April 16 .
Johnson threw three scoreless innings against the Zephyrs before he was hit on the pitching arm by a comebacker .
The 24 - year - old right - hander ended up missing Johnson 's next start on April 16 .
Johnson threw three scoreless innings against the Zephyrs before he was hit on the pitching arm by a comebacker .