Ellington picked up 14 of the Cardinals' 68 offensive snaps during Thursday's 33-21 win at San Francisco.
Following Chris Johnson's (sports hernia) placement on injured reserve, Ellington becomes the veritable backup running back to workhorse David Johnson. Snaps are thus guaranteed for the fourth-year pro, but the younger Johnson dominated the RB touches Thursday, racking up 157 yards on the ground and 28 more through the air. Meanwhile, Ellington earned six carries but no targets, all of them in the second half of a game that was less in question as the clock wound down. He'll likely parlay his pass-catching chops into a handful of big plays as the season proceeds, but Johnson is more than competent in that realm as well, hindering Ellington's potential opportunities.