• Photo Gallery: AT&T Byron Nelson, Round 2

  • The FedExCup leader found himself in familiar territory with the solo lead on Friday before Jason Kokrak, below, surged ahead with an 8-under round to top the leaderboard. (Drew Hallowell/Getty Images)The FedExCup leader found himself in familiar territory with the solo lead on Friday before Jason Kokrak, below, surged ahead with an 8-under round to top the leaderboard. (Drew Hallowell/Getty Images)