Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed

Yanks' Cashman backs Boone to turn `slings' into 'bouquets

Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed – KGET 17

Yankees GM Brian Cashman Backs Aaron Boone to Turn Fans' 'Slings' into 'Bouquets' – NBC New York

New York Yankees history: Paul O'Neill's number 21 must be retired

Yankees fans boo Hal Steinbrenner, Brian Cashman during Paul O'Neill ceremony

Yankees fans boo Hal Steinbrenner on Paul O'Neill Day

Yankees' Cashman backs Boone but says 'we have to weather this storm