Aussie star Devlin was shown a straight red by Steven McLean for a brutal tackle on Welsh international Matondo which saw the Hearts start viciously stamp on the Rangers winger’s ankle.
There were no complaints from the Hearts bench as the player was sent packing with Cammy Devlin giving his side a mountain to climb as the Jambos were left two goals and a player down in the first half.
Rangers would go on to win the match comfortably in a 4-0 victory but as the challenge came in from Devlin, Sky Sports commentator for the day Ally McCoist railed against the player.
“Oh dear me, what is he thinking about?” said McCoist during Sky Sports’ live coverage of the match.
“It’s right down on his right ankle here.
“Oh dear, leaves the referee absolutely no option at all, nonsense.
“I did mention before he’s a fiery character, when you’re 2-0 down [Hearts manager] Robby Neilson must be saying what’s going on here, crazy absolutely crazy.”
Hearts’ Cammy Devlin sees red v Rangers
Rangers manager Giovanni van Bronckhorst also spoke about the decision after the match and after cameras caught him speaking to Cammy Devlin following the red card.
The Dutch coach said that whilst he “really likes” Devlin as a player, van Bronckhorst told him that making these sorts of challenges was not necessary as he’s “far better” than that.
Hearts manager Robbie Neilson also had his say on the decision after the match and claimed that Cammy Devlin had let his teammates down with the tackle.
The Jambos boss also claims that the decision “killed the game” for his side and admitted it was a red card tackle.
Rangers won 4-0 at Tynecastle courtesy of an Antonio Colak first half double and second half strikes from Alfredo Morelos and Ryan Kent.
Next up for Rangers is a Champions League trip to face Liverpool whilst Hearts will face a glamour tie of their own, hosting Serie A side Fiorentina in Edinburgh in the Europa Conference League.