The Boston Red Sox placed left-handed pitcher Eduardo Rodriguez on the 10-day disabled list with a right knee subluxation prior to Friday's game against the Baltimore Orioles.
To fill his spot on the 25-man roster, the Red Sox recalled right-handed pitcher Brandon Workman from Triple-A Pawtucket.
Rodriguez slipped while getting ready for Thursday's start, and he then gave up four homers while allowing seven runs over 5 2/3 innings against the Orioles.
He experienced knee pain Friday.
Rodriguez, 24, is 4-2 with a 3.54 ERA in 10 starts this season. He has 65 strikeouts and has limited opposing batters to a .222 average.
He compiled a career-long four-game winning streak over seven starts from April 23 through May 26.
Workman, 28, has appeared in one game with Boston this season. He pitched three scoreless innings against the Orioles on May 4, his first big league appearance since 2014.