Sylvis: Reigning Masters and US Open champion Jordan Spieth ratcheted up his preparation for next week’s British Open by firing a seven-under-par 64 in Friday’s second round of the PGA John Deere Classic. While fellow American Justin Thomas followed a 63 with a 67 to seize the overall lead, attention focused on Spieth as he bids to win the first three majors of the year.

Jordan Spieth