Why LA's James Harden tried to block teammate Kawhi Leonard's shot

James Harden blocked his own teammate's shot from the top of the basket. The NBA star said he felt compelled to block Kawhi Leonard's shot. Harden blocked the shot in the face of his own teammate's attempt to score a bucket. Harden said he was "compelled" to block the shot from Leonard.

James Harden blocked his own teammate's shot from the top of the basket. The NBA star said he felt compelled to block Kawhi Leonard's shot. Harden blocked the shot in the face of his own teammate's attempt to score a bucket. Harden said he was "compelled" to block the shot from Leonard.

Kawhi Leonard ruled out with back spasms; leaves arena arena. Kawi Leonard will be out for rest of the season. Leonard has been ruled out of the NBA's first two games with a back injury. Leonard is expected to be sidelined for the rest of his season with the Spurs.