Roberto Castro took the first-round lead in the AT&T National at Congressional in Bethesda, Md., shooting a 5-under 66 on the course that hosted the 2011 U.S. Open.
Winless on the PGA Tour, Castro made three straight birdies late in his round.
Only a dozen players shot in the 60s and the average score was just over 73, despite soft conditions.
Billy Horschel, Bud Cauley and Graham DeLaet each shot 68.
HUSTON ON TOP
John Huston shot a 5-under 65 to take the first-round lead in the Senior Players Championship in Pittsburgh, the third of the Champions Tour’s five majors for 50-and-older players.
Huston started on No. 10 and played even par until the turn at soggy Fox Chapel. Huston shot 5-under 30 coming in.
Saying he’s “feeling a bit lost” in a difficult year, Rory McIlroy shot a 2-over 74 in the Irish Open to fall eight strokes behind first-round leader Oscar Floren in Maynooth, Ireland.
The second-ranked McIlroy, from Northern Ireland, had four bogeys and two birdies in wet and overcast conditions at Carton House. Floren, from Sweden, had a 6-under 66.
PUTNAM IN TOP 5
Web.com Tour money leader Michael Putnam, a graduate of Tacoma’s Life Christian Academy, had five birdies and a lone bogey – at No. 18 – for a 4-under 68 to tie for fifth after the opening round of the United Leasing Championship in Newburgh, Ind.