Mariano Rivera says he will alter his winter throwing program to compensate for all the time he missed in 2012.

"It is not 100 percent," Rivera said of his surgically-repaired knee. "I would say it is 95 percent, but, by the time spring training finishes, it will be 100 percent."

Rivera, 43, expects to begin his throwing program next week, which is sooner than normal. He last pitched on a major league mound on April 30, 2012 against Baltimore.