The hard-throwing right-handed closer was ejected from a game against the Minnesota Twins Tuesday after throwing a pitch at the head of Augie Ojeda shortly after a two-run homer by Michael Cuddyer in the ninth inning.
The four-game suspension and $1,000 fine were delayed after Julio filed an immediate appeal. The suspension was to begin for Friday night's game against the New York Yankees.
Julio, who has claimed all along that the pitch was not intentional, said on the team's Web site: "I never tried to hit this guy on the face or the head or wherever. I am (appealing) because it's just not true. I just tried to throw inside. That's what happened. That's a lot of games. You can't feel good about it because it's four games. I don't feel good because (pitching) is my job."
Twins Manager Ron Gardenhire had called for a suspension.