May 20, 2012; Los Angeles, CA, USA; San Antonio Spurs center Tim Duncan (21) is defended by Los Angeles Clippers forward Blake Griffin (32) during game four of the Western Conference semifinals of the 2012 NBA Playoffs at the Staples Center. The Spurs defeated the Clippers 102-99 to win the series 4-0.; Mandatory Credit: Kirby Lee/Image of Sport