Underdogs Nick Percat and Todd Hazelwood have upset the big guns in Supercars qualifying, with the Holden drivers securing pole positions for Sunday’s two races in Townsville.

The Brad Jones Racing teammates set a hot-pace around the Reid Park street circuit and both claimed pole for the first time in their careers.

Percat continued his promising season, which has already yielded two race victories, by taking out the first qualifying session of the day.

The 31-year-old edged out Ford flyer Scott McLaughlin, with the two-time defending champion qualifying second after winning Saturday’s first 39-lap race.

Percat enjoyed another golden session to qualify second-fastest for the final race of the Townsville Supersprint, but was denied a pair of poles by Hazelwood.

The 24-year-old has only scored one podium finish in his Supercars career but now has a golden opportunity for a maiden race victory.

“I had an absolute rocket. We had our dramas (on Saturday) but I knew we’d come back swinging today and we certainly proved that,” Hazelwood said.

McLaughlin will have to play catch up in the round’s third race after an incident with Matt Stone Racing’s Garry Jacobson saw the Shell V-Power ace slump to 10th.

Holden’s Jacobson took responsibility for the mistake.

“It was a communication error. I thought I had more time behind me than I thought and didn’t really hear anything on the radio,” Jacobson said.

“I’m really gutted for Scott McLaughlin. I apologised to him straight away and I’ll wear it.

“Scott had every right to be upset. He just said ‘you should have known I was coming’.”

Sunday’s first 39-lap race gets underway at 12.05pm AEST.