Tensions flare after Tomas Rogic's tackle on Rhyan Grant.

Tensions flare after Tomas Rogic's tackle on Rhyan Grant. Photo: Getty Images

FORMER Socceroo Robbie Slater believes Tom Rogic's three-match A-League ban is ''too harsh''.

The Central Coast Mariners playmaker was sent off for a rash tackle on Sydney FC's Rhyan Grant in the dying seconds of the Mariners' 1-0 loss at Allianz Stadium on Thursday.

Rogic's red card prompted an automatic one-game ban, but the independent match review panel advised of the additional two-match ban on Saturday. The Mariners have decided not to fight the ban, with Rogic now set to miss clashes with Perth, Western Sydney Wanderers and Melbourne Victory.

Too harsh ... Robbie Slater.

Too harsh ... Robbie Slater. Photo: Brendan Esposito

Fox Sports soccer expert Slater said a two-match ban would have been more appropriate.

He said the match review panel should have taken into account that Rogic was ''kicked from pillar to post'' by the Sydney defenders.

''For me two matches is enough … three is too many, [it's] too harsh,'' he said. ''Luckily the other player wasn't injured.''

Slater said Sydney youngster Peter Triantis, who picked up a yellow card after just six minutes, had repeatedly fouled Rogic and was lucky to stay on the park. He felt the referee should have done more to protect the Canberra-born Rogic.

Slater said the red-card tackle was a ''one off'' mistake by the 20-year-old.

''Challenges like that are just not him,'' he said. ''It shouldn't be a part of him, it's not what he's about.''