"I don't see it happening," said manager Joe Girardi.
Girardi recently said he was 99.9 percent sure Rivera would not rejoin the Yankees until next Spring Training and stood by that after Rivera threw. He did not watch Rivera's throws from flat ground, but Rothschild told Girardi that Rivera "looked pretty good."
"When you're a baseball player and you can't do the things you used to do, as soon as you can do it, you try it," Girardi said. "That's probably what Mo did."