Matusz, who declined to address the issue after Saturday's 1-0 loss to the Marlins, has appealed the decision and is available to pitch in Monday's game against the Houston Astros in Baltimore.
Matusz was the second pitcher in less than a week to be suspended for having a foreign substance on his arm by Joe Garagiola Jr., the MLB senior vice president of standards and on-field operations. Brewers pitcher Will Smith also appealed after getting an eight-game ban Thursday.
Matusz entered the game in the 12th with the score 0-0 and retired the first two batters before Marlins manager Dan Jennings approached home plate umpire Jordan Baker. Baker and crew chief Paul Emmel then went to the mound to inspect Matusz's arm.
"I went out there and told the pitcher I was going to touch his right forearm," Emmel said. "That's where he was touching before he went to the ball. I detected a foreign substance, so the pitcher was ejected."