Wong is getting his first break from the starting lineup in more than two weeks Sunday, with
The Cardinals are favorites (-142) against the Pirates Sunday, per VegasInsider.com.
Eaton is battling an illness. For the third straight day, he'll be replaced by
Shuck will bat leadoff.
"I think Andre will continue his same role," Arians said. "We’ll keep him healthy and let him continue to develop as a player, but the nice thing David can do is he can do everything Andre does, so you don’t have to change if there was an injury."
Ellington served as a three-down back for the Cardinals last season, but averaged just 3.3 yards per carry while racking up 660 rushing yards and three rushing touchdowns. He also gained 395 yards on 46 receptions while scoring two touchdowns through the air. After racking up eight carries of at least 20 yards in just 118 attempts in his rookie season, Ellington managed just four carries of 20-plus yards while receiving nearly twice the workload in 2014.