Paul O'Neill's number to be retired by Yankees

Yankees fans boo Hal Steinbrenner during Paul O'Neill ceremony

Yankees retiring Paul O'Neill's number

Derek Jeter drops message for Paul O'Neill after Yankees retire his number

Paul O'Neill discusses number retirement by Yankees

Yankees retired numbers: A look at all of the jersey numbers players cannot wear in the Bronx

Today the Yankees retired Paul O'Neill's number, mainly for his willingness to help sick children in the hospital and give out autographs to strangers in the clubhouse : r/seinfeld

NY Yankees retire Paul O'Neill's No. 21

Paul O'Neill talks jersey number retired by New York Yankees

Paul O'Neill's No. 21 to be retired by Yankees