Craig Taylor also notched a 66 to move into third place at 6-under-par 134. Amateur Craig Doell is alone in fourth place at minus-5 after a 66 of his own. Jaime Gomez, Scott Hawley, Russell Surber and Brock Mulder share fifth place at 4-under-par 136.
Matthew played the back nine first and was 2 under for his opening nine holes. He posted the same score on the back nine to share the lead.
'I hit the ball a lot better today,' said Matthew, who won the 2001 Ontario Open Heritage Classic. 'I really found it on my back nine. I was pretty steady all day.'
Hickmott is making his Canadian Tour debut after securing his card last week at Spring Qualifying School.
'I was a little bit nervous at the start of the week, but it's really just another game of golf,' Hickmott said. 'I'm pretty confident with my game, so I'll just go out there, do the best I can and see where it leaves me. I know everyone says it, but one shot at a time is the only way.'
Wes Heffernan, the first-round leader, struggled to a 2-over 72. He slipped into a share of ninth place at 3-under-par 137. He is joined there by Jim Lemon, Peter Wilson, Will Yanagisawa, Brian Guetz, Craig Kanada, Trevar Matheson, Alex Rocha, Peter Tomasulo and Rob McMillan.
The cut line fell at 2-over-par 142 with 73 players advancing to the final two rounds. The cut almost fell at plus-1, but Isaac Weintraub who stood at 3 under was disqualified allowing 14 more players to make the cut.