Mike Mussina has decided to retire, sources tell FOXSports.com's Ken Rosenthal.
The New York Post reports that the Yankees expect Mike Mussina to retire.
Mike Mussina said Wednesday that he'll announce next week whether he plans to return in 2009 or retire.
Yankees manager Joe Girardi revealed Friday that Mike Mussina told him after the season that he was "probably going to retire."
Agent Arn Tellem said Monday that there's still "no timetable" for Mike Mussina deciding whether or not he'll retire.
Mike Mussina's agent informed the New York media Saturday that his client still hasn't decided whether to retire.
Newsday's Ken Davidoff said it would be a "shocker" if Mike Mussina decided against retirement.
Mike Mussina said Monday that he's still undecided about pitching next season.
General manager Brian Cashman said Wednesday that he thinks Mike Mussina is leaning toward retirement.
Mike Mussina completed his first 20-win season by shutting out the Red Sox for six innings in the first game of Sunday's doubleheader.
Mike Mussina said he'll decide this winter whether he wants to pitch for three more years or call it a career now.
Mike Mussina earned his 19th win Tuesday after throwing five scoreless innings versus the Blue Jays.
Mike Mussina picked up his 18th win after throwing six-plus innings of one-run ball Thursday against the White Sox.
Mike Mussina surrendered four runs in six innings against the Mariners on Sunday to fall to 17-8 on the season.