"His family is with him and he's getting unbelievable care," Tippett said.
Cunningham, a forward who played 10 games for the Coyotes last season, collapsed and was on his back while medical personnel cut away his jersey before moving him off the ice, according to Tucson.com. He was taken to a hospital and received treatment.
The game was postponed.
"Our staff did a phenomenal job in terms of their response," Coyotes general manager John Chayka told ArizonaSports.com. "The care he's receiving now is unbelievable"
Cunningham, 26, was a fourth-round pick (No. 97) by the Boston Bruins in the 2010 NHL Draft. He has three goals and five assists in 63 NHL games with the Bruins and Coyotes.
Roadrunners home games against the San Diego Gulls on Tuesday and Wednesday will be rescheduled.
"Craig is a highly respected player and team leader in our league," AHL president and chief executive officer David Andrews said in a statement. "The thoughts and prayers of the entire AHL family remain with Craig, his family and his teammates."
