Quick hitters from USC’s Thursday practice, the last one before Saturday’s spring game:

** Linebacker Michael Morgan will miss the spring game because of a high right ankle sprain. Malcolm Smith took Morgan’s place, sliding from the weak side to the strong side, and Jordan Campbell moved into Smith’s spot.

** Center Kristofer O’Dowd, who hasn’t participated in spring practice after having offseason shoulder surgery, said doctors have cleared him to begin lifting.

** Tailbacks Stafon Johnson and Joe McKnight missed practice to take care of some academic responsibilities but are expected back Saturday, USC coach Pete Carroll said.

** Quarterback Aaron Corp threw his first interception of the spring. Nose tackle Jurrell Casey stepped into the path of a screen pass to end the streak.

More from the USC blog:

• USC football: Updates on Galippo, Green, McAllister, Tyler
• NFL draft: Sanchez to Seattle sentiment swelling
• USC football: Corp has support as leading man
• NFL draft: Maiava ‘could be better than all of them’
• USC football recruiting: WR Stills gets UCLA offer, awaits Trojans
• USC football: Mustain questions rep ‘interpretation’
• USC football: QB competition — rhetoric or reality?
• USC football poll: Is Corp the right call?
• USC football: Corp is No. 1, but ‘nothing’s permament’
• USC football: Bradford, Gable return to action

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