TORONTO - Cory Greenwood is anxious to finish the 2015 season with a bang.

The hard-hitting linebacker expects to play Sunday when the Toronto Argonauts visit Tim Hortons Field to face arch-rival Hamilton on in the East Division semifinal. Greenwood has been on the six-game injured list since suffering a concussion — his second this season — in a 42-12 road loss to the Tiger-Cats on Sept. 7.

Greenwood, 30, from Kingston, Ont., said he's been symptom-free for the last two weeks. He felt he could've played in Toronto's 21-11 regular-season finale win over Winnipeg last weekend but was a healthy scratch because the Argonauts were already assured a third-place finish in the East regardless.

"I'm thinking this is a three-game season for me," Greenwood said following Friday's practice. "I want to be 3-0 and win the Grey Cup.

"I've never won a championship at any level. We've got a great opportunity right now to get into the Grey Cup and win it but first we have to go to Hamilton."

Both of Greenwood's concussions have come at Tim Hortons Field, where Toronto is a dismal 0-5 since the stadium opened last year. The Argos are 0-3 against Hamilton and also lost to Calgary and Montreal there in games relocated because of the Toronto Blue Jays making the American League playoffs.

Hamilton swept the season series with Toronto 3-0 but has dropped three straight and five of its last seven since a 35-27 road win over the Argos on Sept. 11.

Concussions and their long-term effect on players' mental health are hot-button topics in football. While Greenwood admits he's thought about the game's impact upon him later in life, he'd have to seriously ponder his future if his 2015 campaign was derailed by a third head injury.

"When I grew up concussions weren't really a big deal and weren't talked about much," Greenwood said. "You've only got one head, one brain.

"If you get three in a year, you've got to take a step back."

Greenwood spent time in the NFL with Kansas City and Detroit before joining the Argos late last season. He's not about to change his playing style despite the two concussions.

"I can't," he said. "If you change your game and you're not downhill and physical or are afraid to hit people and think about it or hesitate, then you can't do your job.

"I am not there. I had a good week of practice, we were in pads and I was banging. I feel great."

Greenwood would replace Winnipeg native Thomas Miles in Toronto's defence. Argos head coach Scott Milanovich said Greenwood would offer more versatility to the unit.

"Miles is more of a Mike linebacker, downhill, hit you in the hole," Milanovich said. "Greenwood can do that but he also has the ability to cover speed down the field."

Hamilton will certainly have home-field advantage Sunday before an expected Tim Hortons Field sellout. But sophomore Jeremiah Masoli will be under centre with incumbent Zach Collaros (knee) and backup Jeff Mathews (head) out.

Collaros led Hamilton to its three wins over Toronto at Tim Hortons Field and was the overwhelming favourite to capture the CFL's outstanding player award before his injury.

"When Zach went down, that changed the dynamic of their team," Greenwood said. "He (Masoli) likes to run around and use his legs so we're going to have to contain him in the pocket.

"He's been proven to be a pretty good runner. It's just a different dynamic, Zach wants to throw the ball before he wants to run."

While the Argos have their demons to exorcise at Tim Hortons Field, they were 7-6 record away from Rogers Centre this season.

But there's a sense of urgency for Greenwood, who's in the final year of his CFL deal and scheduled to become a free agent in February 2016.

"I'm 30 years old now so my days are numbered," he said. "This could be my last (shot at) Grey Cup, who knows, and I am a free agent at the end of the year.

"I'm not going to make any decisions during the year, I'll wait until the off-season. But I still love this game a lot and feel I can still play at a high level."