By Will Pearson, europeantour.com
at Pinehurst
Following a superb opening round at Pinehurst Resort, we take a statistical look back at the key numbers from day one at the US Open Championship.
US OPEN CHAMPIONSHIP: DAY 1 IN NUMBERS
65- Martin Kaymer's sublime first round score - the lowest US Open round ever at Pinehurst
6- Birdies and just the 1 bogey on the German's card on day one in North Carolina
69- Kaymer's lowest previous US Open score in 22 other rounds at the championship
25- Number of putts for the Dusseldorf native, who hit 13 out of 14 fairways and 11 out of 18 Greens in Regulation
73.23- The scoring average for the field after the first day at Pinehurst
68 - The lowest score by a former US Open Champion (Graeme McDowell)
7- Different nationalities in the top ten (1 German; 9 Americans, 1 Northern Irishman, 1 Zimbabwean, 1 Swede, 1 Japanese and 1 Italian)
11- The most difficult hole on Thursday, averaging 4.47 and yielding just 3 birdies
5- The easiest hole on Thursday, averaging 4.79 and giving up five eagles and 54 birdies
15- Players under par
17- Number of shots between first and last place following the first 18 holes
71- The lowest amateur score of the day shot by both England's Matthew Fitzpatrick and Australia's Oliver Goss, who duked it out against each other in the US Amateur final last year
5- Eagles on Thursday (Lucas Bjerregaard, Brooks Koepka, Graeme McDowell, Kevin Na and Geoff Ogilvy - all on the fifth hole)
6- The number of players to hit all 14 fairways
16- The number of greens hit in regulation on day one by Brendon De Jonge and Paul Casey
7,562- Yardage of Pinehurst No. 2 this week - the second longest course in US Open history
6- Of last 10 US Open winners have been tenth or worse after the opening round
3- Of last four US Open winners have been European Tour members...
