25 Gregory Polanco RF

Polanco underwent successful shoulder surgery Wednesday, Adam Berry of MLB.com reports.

As expected, Polanco went under the knife after a second opinion revealed his dislocated left shoulder would require surgery to stabilize. The shoulder injury was one of two season-ending injuries Polanco sustained sliding into second base last week, along with a deep bone bruise in his left knee. The Pirates have yet to provide a potential recovery timeline for the outfielder, though the club previously announced Polanco would need six-to-eight weeks to recover from his knee injury.

Polanco (knee) is set to undergo surgery on his dislocated shoulder Wednesday, Adam Berry of MLB.com reports.

Initially, the Pirates believed that Polanco wouldn't require any sort of procedure after suffering shoulder and knee injuries during Friday's game against the Marlins. Following the diagnosis of a deep bone bruise on his left knee, the club announced that he would be sidelined for the rest of the season. More recently, a second opinion on his shoulder from Dr. David Altchek revealed that surgery was necessary to stabilize the shoulder. The Pirates won't provide an estimated recovery timetable until after the procedure has been completed.

Polanco went 1-for-4 with a run scored and a stolen base Sunday against the Braves.

Polanco continued to produce despite reaching base only once by swiping his 11th base of the season. Though his performance has still been inconsistent, the 26-year-old is finally delivering on his power-speed potential and has a 25 home run and 15 stolen base campaign within his reach.

Polanco went 1-for-4 with a solo home run in Saturday's 5-3 loss to the Braves.

The streaky outfielder is dialed in at the moment, hitting .311 (14-for-45) over the last 11 games with three homers and nine RBI. Despite generally disappointing numbers this season, Polanco's already tied his previous career high with 22 home runs, and he's only 10 RBI shy of tying his previous best of 86 in that category as well, both marks set in 2016.

Polanco went 1-for-4 and hit his 21st homer -- a solo shot -- Sunday in Milwaukee.

Since June 17, the right fielder is slashing .298/.379/.596 with 13 homers and 41 RBI in 241 plate appearances. After slumping to begin August, Polanco has strung together a seven-game batting streak, during which he's hit .393 in 28 at-bats. Although his overall batting average is just .248, he ranks ninth in the National League with a .248 ISO.