Johnson also played cornerback Thursday - and he had an interception return for a TD in one drill.
Gardner is expected to dress for Saturday’s game, so he's on a crash course to learn the offence.
"If he was to go in the game, I told him he needs to know about five plays," Roughriders head coach-GM Chris Jones said. "We've got to be able to run the football some with him and he’s got to know five passing plays in order to get us through the game if he's playing this early."
Defensive tackle Eddie Steele has lined up at guard all week and he's expected to play both ways against the Als.
"You've got to do what you've got to do for the team," Steele said. "It's not unfamiliar territory; I started a couple of games (on the Edmonton Eskimos' O-line) back in 2015."
The Roughriders appear set to use newly signed Mic'hael Brooks in their rotation at defensive tackle alongside Zack Evans and Makana Henry. Steele could get some time there while also backing up on the O-line.
"I don't (have a preference)," Steele said. "It's football and I like playing football. O-line is slowly growing on me, but I'm still wearing the green shirt (of a defensive player) in practice."
https://www.riderville.com/2018/06/28/notebook-david-watford-ready-called-upon/