Michael Putnam spun a bogey-free, 6-under-par 33-31=64 in his opening round of the RBC Canadian Open, good for sole possession of the clubhouse lead.
Padraig Harrington birdied five of the last eight holes to shoot a 4-under-par 35-32=67 and take the first round lead at the Dubai Duty Free Irish Open.
Tom Gillis opened the AT&T Byron Nelson Championship with a 4-under-par 32-34=66 to establish the very early clubhouse lead.
Emiliano Grillo toughed out a 2-under-par 35-34=69 in his opening round to join Danny Willett and Søren Kjeldsen at the top of the Dubai Duty Free Irish Open leaderboard.
Søren Kjeldsen suffered a walk-off bogey-6 at 18 but a 2-under-par 33-36=69 was enough to secure a share of the clubhouse lead on day one of the Dubai Duty Free Irish Open.
Rory McIlroy failed to card a single birdie in a miserable 9-over-par 39-41=80 in the first round of the Dubai Duty Free Irish Open.
Danny Willett dug out a 2-under-par 34-35=69 to post the early clubhouse lead in round one of the Dubai Duty Free Irish Open.
Jason Day has chosen not to compete in this week's AT&T Byron Nelson Championship.
Ian Poulter alerted his followers on Twitter today that he's pulled out of this week's AT&T Byron Nelson Championship.
Will Zalatoris has withdrawn from the AT&T Byron Nelson Championship after requiring an appendectomy.
Troy Matteson navigated Gentle Creek Country Club in Prosper, Texas, in bogey-free, 7-under-par 31-31=62 in today's open qualifier for the AT&T Byron Nelson Championship, good for a share of medalist honors and a berth into the tournament proper.
Alexander Levy of France completed the U.S. Open sectional qualifier in England in 11-under-par 66-67=133, good for medalist honors among 11.