A bitter contract fight between Canada’s largest airline and the union representing its flight attendants escalated Friday.

The Scot holed a collection of big par putts and then delivered a 40-foot birdie on the final hole for a 2-under 68 Saturday.

MacIntyre rolled in a long birdie putt on his final hole Saturday to extend his lead to four over the world No. 1, entering the final round at Caves Valley.

Robert MacIntyre was up to the test of facing the No. 1 player in the world, holing big par putts and delivering a 40-foot ...