By the numbers: Round 1 stats from the PGA Champ.

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SHEBOYGAN, Wis. – Dustin Johnson leads after the opening round of the season’s final major. Here are some notable statistics, courtesy the Golf Channel research department:

Dustin Johnson (66)

  • Combined 20 under in the first round of majors this year
  • This year, he’s 37 under in Rounds 1 and 2 of majors; six over in Rounds 3 and 4
  • Third consecutive major in which he’s opened with a 66 or lower

Jordan Spieth (71)

  • Twelve of 13 rounds in majors this year have been at par or better
  • Combined 38 under in majors this year
  • Has a 45 percent “bounce-back” rate (making birdie after making bogey) in majors this year; Tour average is 20 percent

Rory McIlroy (71)

  • Fifteen of last 17 rounds in majors have been at par or better
  • Shot 67 or better in first round of all four major wins

Tiger Woods (75)

  • Sixth consecutive over-par round in a major
  • Missed three cuts in majors from 1997-2013. This could be his third consecutive missed cut. He is currently tied for 86th
  • Combined 33 over par in majors the last two years. Was 126 under par in majors from 1997-2013

Notable players

  • David Lingmerth (67): Competing in his fourth career major. This is his best round by two strokes
  • Jason Day (68): Fifth consecutive major with an opening round in the 60s
  • Danny Lee (68): Fourth career major start; never made a cut