Vegas isn't stupid.
After Tiger Woods posted a 4-under 68 to move within one shot of the lead after the second round of the Masters on Friday, the oodsmakers adjusted accordingly.
Woods is now the favorite to win this week with 6/1 odds.
It makes sense as Woods was hitting long putts on the course throughout the day and was confidently putting drives in the fairway and making impressive recoveries from odd positions.
And Vegas knows who everyone will now be betting on so it's not going to get caught giving good odds to a man who has won 14 majors.
But Brooks Koepka isn't far behind in the odds as he sits at 7/1 having won three majors over the last two years including two of the last three at the U.S. Open and PGA Championship.
Dustin Johnson and Francesco Molinari each sit at 7/1 as well.
Here are the updated odds for the 2019 Masters, the Action Network.
Updated odds to win the 2019 Masters
| Player | Odds |
| Tiger Woods | 6/1 |
| Brooks Koepka | 7/1 |
| Dustin Johnson | 7/1 |
| Francesco Molinari | 7/1 |
| Jason Day | 10/1 |
| Adam Scott | 10/1 |
| Louis Oosthuizen | 12/1 |
| Xander Schauffele | 14/1 |
| Jon Rahm | 16/1 |
| Justin Thomas | 30/1 |
| Ian Poulter | 30/1 |
| Rickie Fowler | 30/1 |
| Phil Mickelson | 40/1 |
| Matt Kuchar | 40/1 |
| Rory McIlroy | 40/1 |
| Bryson DeChambeau | 50/1 |
| Justin Harding | 60/1 |
*Odds as of April 12.