Nelson playing tougher for afternoon groups

IRVING, Texas -- The afternoon wave is finding TPC Four Seasons Las Colinas much more difficult on Day 1 of the HP Byron Nelson Championship.

Calm, cool conditions prevailed for those lucky enough to draw early tee times. But the afternoon brought with it wind and humidity.

Keegan Bradley leads after a course-record 10-under 60. The current top nine scores were all posted by morning starters.

Among those in the afternoon wave, Marc Leishman, Patrick Reed and Andrew Svoboda are all 4-under with holes remaining.

In other afternoon play of interest, Dallas’ 19-year-old Jordan Spieth is even after 14 and 14-year-old Chinese prodigy Guan Tianlang is 1-under through 11 holes.