Hawthorn's Cyril Rioli set to spend time in grandstand after hurting hamstring Long term injuries to Cyril Rioli and Tex Walker a huge blow for AFL. Cyril Rioli leaves the field after hurting his hamstring. HAWTHORN has suffered a huge blow with Cyril Rioli set to miss the best part of two months with a hamstring injury. Carlton's Bryce Gibbs will also spend time on the sidelines with a hamstring strain, but he is likely to miss only one week in what was better news for the defender. Rioli suffered a high grade tear to the lower part of his right hamstring during the final quarter of Sunday's win against North Melbourne. The Hawks livewire will not require surgery, but the club has already conceded the 23-year-old will not play before its bye in Round 11. "It's probably not looking too good," Rioli said yesterday. I just remember hearing and feeling a pop and I went down. I'd love to be out there every week, but these sort of things happen and I think it will give me a good break mentally from footy. The damage Rioli's absence could cause was no more apparent than Sunday considering, before he went off, he was a huge part of why the out-of-sorts Hawks were able to topple the Roos. Rioli, who was walking with a considerable limp yesterday, said the injury was all the more frustrating considering his previous history with hamstring troubles in both legs. Teammate Grant Birchall said Rioli's injury was a blow. "He's obviously very explosive and a very damaging player," Birchall said. He's pretty hard to replace with his skill level and his ball winning ability and his goalkicking and all that sort of stuff, so he'll be sorely missed. But we've got some good depth, so I'm confident whoever comes in can fill the void pretty well. Gibbs was substituted during the third quarter of Saturday's win against Adelaide after feeling tightness in his hamstring. Scans yesterday revealed a low-grade strain and the Blues wasted no time in ruling Gibbs out for the weekend's clash with lowly Melbourne. "By missing this week's game and then having an extended eight day break, we will evaluate how Bryce recovers and reassess next week his availability for the round seven Monday night match," Carlton football manager Andrew McKay said. PORT Adelaide's Jackson Trengove will miss "an extended period of time" with a foot injury according to high performance manager Darren Burgess. The 22-year-old key defender had surgery yesterday after scans revealed a fracture in his foot. "After an incident in the game (against West Coast) we thought it was only a minor foot issue, but given that he was unable to continue playing we had it investigated and found a metatarsal fracture," Burgess said.