Minnesota Vikings wide receiver Rondale Moore suffered a "pretty significant" left knee injury while returning a punt during the second quarter of Saturday's preseason matchup vs. the Houston Texans,

WR Rondale Moore suffered a "pretty significant" injury to his left knee against the Texans on Saturday, hurting it on his first play after returning from a major injury to his right knee last season.

Key return man Rondale Moore suffers significant injury in preseason opener for Vikings and may be lost for long period