OAKVILLE, Ontario — Mike Weir wasn't talking about water when asked about buying a round to celebrate his hole-in-one.

"It's good drinking weather right now," Weir said.

Ace protocol aside, he probably could have used a stiff belt Sunday after a rules violation cost him a stroke in the rain-delayed Canadian Open.

Nearly 5 inches of rain has fallen since play started Thursday, leading to the loss of about 27 hours of daylight to unplayable conditions and forcing the tournament to at least a Monday — or possibly Tuesday — finish at saturated Glen Abbey.

"Instead of reading the grain, you have to read the current," said Weir, trying to become the first Canadian winner since Pat Fletcher in 1954.

Five shots behind leader Jason Dufner when third-round play was suspended Sunday because of rain and lightning, Weir took a penalty stroke for an infraction Saturday on the final hole of the second round.

"It's been a crazy week," Weir said. "Look at all this. I mean, this is bizarre."

Weir's ball moved before he played his second shot on the par-5 18th, but he was unsure whether he grounded his club or caused the shift. After calling for a ruling, he replaced the ball in its original location and took a one-stroke penalty.

Before Weir signed his scorecard, the penalty stroke was rescinded after he and the rules committee reviewed video and determined it was inconclusive whether he caused the ball to move. On Sunday, more video was reviewed, and Weir again assessed himself a one-stroke penalty for causing the ball to move, even though it was still inconclusive whether he addressed the ball.

"Even though I don't think I did, I guess there's that gray-area possibility I could have," Weir said. "So with that, I didn't feel comfortable."

Weir wasn't disqualified for signing an incorrect scorecard.

"If a committee makes a decision or an error we can certainly correct it," said Dean Ryan, a Royal Canadian Golf Association rules official.