Rosales started the season on the DL with a left intercostal strain and began his rehab assignment with Class A Stockton on April 17 before moving up to Sacramento on Sunday.
"I think we took the right path," Rosales said of his rehabilitation process. "The trainers helped me, they all did a great job. They made sure I stayed on the right track and did everything I needed to get back as soon as possible."
Rosales batted .320 with two doubles, a home run and an RBI in six rehab games. However, his return hinged more on his ability to throw without discomfort, and the team even checked in Thursday to ensure he was ready.
Before Thursday's 10-2 loss against the Orioles, manager Bob Melvin said Rosales would "probably" start Friday, but Rosales appeared earlier, pinch-hitting for Eric Sogard in the seventh inning with runners on first and second against reliever Troy Patton. Rosales grounded into a double play, but singled to right in the ninth inning.
Parrino hit .125 in nine games with Oakland. He started six games, four at second base, one at shortstop and one at third base.
Willie Bans is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.