The headliner for the RBC Canadian Open field will not be playing on the weekend, as Rory McIlroy's week went from bad to worse on Friday, as he followed up his 71 on Thursday with a 78 in the second round to miss the cut by 12 shots.

McIlroy shot an 8-over 78, making a mess of the fifth hole with a quadruple-bogey 8 in his highest score since also shooting 78 last year in the first round of the British Open. He had a double bogey on No. 11, four bogeys and two birdies.

CALEDON, Ontario — Masters champion Rory McIlroy tumbled out of the RBC Canadian Open on Friday with his worst round in nearly a year, with Cameron Champ taking a two-stroke lead into the weekend in the final event before the U.S. Open.