I've never believed Roger's version, so I'm not surprised to hear Mac stick to his, but this is the first I can recall hearing this much about the reason for leaving Buckner in ... or about Oil Can.
Don't try to strike everybody out. Strikeouts are boring! Crash Davis
“First sinker I ever threw was to Jason Varitek in my first start in the big leagues. … He said, ‘Here, throw a two-seam.’ I guess he thought I threw one. So I just gripped it and threw it. I wasn’t going to tell Jason Varitek I didn’t throw a two-seam fastball." Clay Buchholz