The Chicago White Sox were hoping that the final late-season addition to the rotation would come from within, with the return of left-hander John Danks from the disabled list.
That won't be happening.
Danks will have season-ending surgery on his left shoulder, the team announced Tuesday. He had been sidelined since May 20 due to a shoulder strain, and he experienced a setback after his lone rehab appearance, June 12 for Triple-A Charlotte.
Last week, the White Sox had announced a revised throwing program for Danks in which he would only throw off the mound in an attempt to accelerate his return to the majors. However, the plan was scrapped Monday, a day before Danks, 27, was shut down for the season.
In nine major league starts this year, the White Sox's Opening Day starter went 3-4 with a 5.70 ERA.
Danks has four years remaining on the five-year, $65 million deal he signed with Chicago on Dec. 23, 2011.
Even without Danks, the White Sox have six starting pitchers available to them with the recent pickup of left-hander Francisco Liriano from the Minnesota Twins. Liriano was scheduled to make his debut for his new team with a start against his old team Tuesday night in Minneapolis.