IRVING, Texas -- Brooks Koepka leaned in for a closer look at his ball buried in deep rough when a critter he couldn't identify caused him to jump back with a bit of a startled look.
His best guesses were a frog or rat, though he was too disoriented to be sure. It definitely wasn't a birdie, because Koepka was on his way to finishing with two straight bogeys after sharing the lead late in his opening round of the AT&T Byron Nelson on Thursday.
A year after losing to Sergio Garcia in a playoff at the TPC Four Seasons, Koepka settled for a 3-under 67 and trailed co-leaders James Hahn and Ricky Barnes by three shots.