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Dustin Johnson already has two runner-up finishes at the RBC Canadian Open at Glen Abbey Golf Course, and now he has a chance to improve on that.<p>Johnson backed up his 5-under 67 on Thursday with a 3-under 69 on Friday to get within four of Martin Flores’ 12-under lead. Johnson is in the top 20 …

Read more at CBS Sports: https://www.cbssports.com/golf/news/dustin-johnson-gets-into-contention-at-canadian-open-after-solid-second-round/