The Phils placed Placido Polanco on the 15-day disabled list Thursday afternoon with what they called lower back inflammation. The move was retroactive to Monday, which means Polanco will be eligible to be activated as early as Aug. 7.
Kevin Frandsen had his contract selected Friday from Triple-A Lehigh Valley to replace Polanco, who had a MRI exam Tuesday, on the 25-man roster before Friday's game in Atlanta.
Polanco is hitting .255 with two home runs, 19 RBIs and a .628 on-base-plus-slugging percentage, which is 119 points below his career average. Since raising his average to a season-high .294 on June 4, Polanco has hit just .184 with eight RBIs and a .494 OPS.
But the Phils will miss Polanco while he is out because he remains a solid defensive third baseman. Ty Wigginton has played the past three games at third base and has committed three errors, including two in Wednesday's 7-6 victory over the Milwaukee Brewers at Citizens Bank Park.
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.