With a sweep of the Sunday poles at the Merlin Darwin Triple Crown, Will Davison continued a qualifying trend.
At all four sprint events so far in 2021, the same driver has claimed both ARMOR ALL Pole Positions on the Sunday.
Series leader Shane van Gisbergen kicked off the run at March's Penrite Oil Sandown SuperSprint with two poles in the wet.
Cameron Waters claimed both poles at Symmons Plains in April, before Davison's teammate Anton De Pasquale achieved the feat at The Bend Motorsport Park.
WATCH: QUALIFYING 13 HIGHLIGHTS
De Pasquale claimed the Saturday pole at Hidden Valley with a record time, which was lowered by Davison on Sunday morning.
Sunday pole sweeps haven't generated Sunday win sweeps; just three times has the pole winner gone on to win on Sunday.
Van Gisbergen won both Sandown races, while De Pasquale converted in Race 10.
The Race 13 session marked Davison's first pole since Sydney Olympic Park in 2014.
He went back-to-back in the following session, marking his first consecutive poles since Abu Dhabi in 2012.
WATCH: QUALIFYING 14 HIGHLIGHTS
"For me, it's been a tough couple of days," Davison said after the session.
"I didn't sleep much last night, I was down on myself.
"It's such an honour to drive the #17 Shell V-Power Racing Mustang.
"I put big pressure on myself this morning, so a big thanks to everyone in the team, Rich [Harris] my engineer for methodically working through things last night and giving me an absolute weapon.
"I was really thrilled with both my laps."
The 38-lap Race 13 will commence at 12:25pm AEST.