The Memphis Grizzlies achieved a great deal on Saturday night with a 115-109 win at the Portland Trail Blazers, opening up a 3-0 lead in their first-round NBA playoff series with a chance to complete the sweep on Tuesday. But it might have come at a cost. [ Follow Dunks Don't Lie on Tumblr: The best slams from all of basketball] Already nursing a limiting foot injury, star point guard Mike Conley left Game 3 with 4:03 remaining in the third quarter, shortly after taking an inadvertent elbow to the head from Blazers guard C.J. McCollum. You can take a look at the play here: Conley went back to the locker room for attention and tests before being taken to a local medical center for further evaluation. ESPN cameras caught Conley holding a bloody towel to his face after his removal from the game: Mike Conley Jr. went into the locker room after taking an unintentional shot to the face. pic.twitter.com/92UuhTgCGZ — NBA on ESPN (@ESPNNBA) April 26, 2015 Grizzlies TV sideline reporter Rob Fischer reported on Twitter that Conley's left eye was swollen , although the specific injury is not known at this time. Conley missed the final four games of the regular season with an unspecified...