The team said Monday the right-hander will be out for 14 to 19 months after elbow surgery. He will have the ulnar collateral ligament and a torn flexor muscle repaired in New York on Tuesday.
"It's tough, being in that position, seeing one of your buddies go through that," White Sox starter Chris Sale said. "But it's part of the game. Things happen for a reason."
Sale, who gave up six hits and one run in 7 1-3 innings Monday in Chicago's 2-1, 11-inning victory over Kansas City, said he was confident his friend and teammate would get through the setback.
"I don't think this would have happened to him if he couldn't handle it or become better from it," Sale said. "I think he will. We've got to be there for him. He's an outstanding pitcher and an even better person. He will prevail from this and become better."
The 30-year-old Floyd was 0-4 with a 5.18 ERA in five starts for Chicago this season before going on the disabled list April 28 with what was initially diagnosed as a flexor muscle strain.
Floyd is 70-70 with a 4.48 ERA in 10 major league seasons with the White Sox and Phillies.
The news did not come as a surprise to the White Sox.
"It's the same as expected," manager Robin Ventura said. "You try to get healthy as soon as you can."
The White Sox said righty Jake Peavy, who was scratched from two starts because of back spasms, is scheduled to start Wednesday night in New York against the Mets.
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