Joe Garagiola Jr., Major League Baseball's senior vice president of standards and on-field operations, announced the discipline Friday just as the Texas Rangers and Twins started the second game of their four-game set. Diamond, whose suspension was to begin Friday night, will file an appeal, MLB said in a statement.
Hamilton, who ended up with five RBIs in the Rangers' 10-6 win Thursday, said he wasn't surprised to be the target of retaliation, but that he didn't expect to get one up by his head.
"I don't think he was trying to hit me in the head," Hamilton said prior to Friday's game. "I just think the ball got away from him. But it got away from him and it was close. That's probably the closest I've ever had a pitch come to me where I could feel it go behind the back of my neck."
Diamond was ejected from the game after sailing the pitch by Hamilton. He had allowed two runs on three hits and a pair of walks in 2 1/3 innings.