After one round, the man with the three-shot lead is now a heavy favorite to win his second career major.
Martin Kaymer is the new favorite after 18 holes at the U.S. Open, coming in at 4/1, well clear of anyone else in the field. Those are the kind of odds you get after shooting the lowest round ever in a U.S. Open at Pinehurst, a 65 that put the German three shots ahead.
Rory McIlroy, who started the week as the favorite at 10/1, has dropped to 16/1 with five guys ahead of him. McIlroy finished an uneven opening round at 1-over, and while he's six shots back, a course that was pounded with rain late Thursday night should set up well for the high-ball hitting Ulsterman. This setup and conditions are nothing like that soggy Congressional course where Rory ran away by eight shots, but anything that makes it softer is better for McIlroy and he's well within striking distance.
Phil Mickelson is also in fine position and will play on the afternoon side of the draw like Rory. He's at even-par after a good enough start, but one that could have been so much better. Mickelson is actually driving the ball spectacularly, keeping it in play and avoiding the trouble off the tee that can promptly lead to a blowup hole at the U.S. Open. But he still couldn't take advantage of that steadiness off the tee, continuing mediocre play up around and on the green.
He should have been in the red if his historically great short game was working on Thursday. If that comes into form in the second round, look out. He's currently 16/1 with McIlroy and Matt Kuchar.
Here are more odds from Bovada after the first round:
| Player | Odds |
| Martin Kaymer | 4/1 |
| Henrik Stenson | 14/1 |
| Jordan Spieth | 14/1 |
| Matt Kuchar | 16/1 |
| Phil Mickelson | 16/1 |
| Rory McIlroy | 16/1 |
| Dustin Johnson | 22/1 |
| Graeme McDowell | 22/1 |
| Hideki Matsuyama | 22/1 |
| Keegan Bradley | 28/1 |
| Kevin Na | 33/1 |
| Adam Scott | 40/1 |
| Brandt Snedeker | 40/1 |
| Harris English | 40/1 |
| Jimmy Walker | 40/1 |
| Steve Stricker | 45/1 |
| Brendon De Jonge | 50/1 |
| Brendon Todd | 50/1 |
| Charl Schwartzel | 50/1 |
| Ian Poulter | 50/1 |
| Justin Rose | 50/1 |
| Rickie Fowler | 50/1 |
| Webb Simpson | 55/1 |
| Francesco Molinari | 66/1 |
| Paul Casey | 66/1 |
| Victor Dubuisson | 66/1 |
| Jason Day | 80/1 |
| Jason Dufner | 80/1 |
| Joost Luiten | 80/1 |
| Louis Oosthuizen | 80/1 |
| Sergio Garcia | 80/1 |
| Zach Johnson | 80/1 |
| Aaron Baddeley | 100/1 |
| Bill Haas | 100/1 |
| Chris Kirk | 100/1 |
| Gary Woodland | 100/1 |
| J.B. Holmes | 100/1 |
| Jim Furyk | 100/1 |
| John Senden | 100/1 |
| Brooks Koepka | 125/1 |
| Patrick Reed | 125/1 |
| Russell Henley | 125/1 |
| Miguel Angel Jimenez | 150/1 |
| Bo Van Pelt | 200/1 |
| Bubba Watson | 200/1 |
| Graham Delaet | 200/1 |
| Hunter Mahan | 200/1 |
| Lee Westwood | 200/1 |
| Marcel Siem | 200/1 |
| Stephen Gallacher | 200/1 |
| Ernie Els | 250/1 |
| Pablo Larrazabal | 250/1 |
| Retief Goosen | 250/1 |
| Shane Lowry | 250/1 |
| Stewart Cink | 250/1 |
| Alex Cejka | 300/1 |
| Boo Weekley | 300/1 |
| David Toms | 300/1 |
| Fran Quinn | 300/1 |
| Geoff Ogilvy | 300/1 |
| Matthew Fitzpatrick | 300/1 |
| Nicolas Colsaerts | 300/1 |
| Thongchai Jaidee | 300/1 |
| Angel Cabrera | 400/1 |
| Billy Hurley III | 400/1 |
| Henrik Norlander | 400/1 |
| Lucas Bjerregaard | 400/1 |
| Mark Wilson | 400/1 |
| Scott Langley | 400/1 |
| Garth Mulroy | 500/1 |
| Matt Jones | 500/1 |
| Oliver Goss | 500/1 |