Jordan Spieth shot a beautiful 64 in the third round and has a 3-shot lead going into round 4. Five times in his career he has entered the last round with a 2+ shot lead and he has won every time. He will be hard to catch. He also has shot 30 and 31 on the back nine the last 2 days so if someone wants to catch him, they need to start early. Dustin Johnson shot a strong 67 and has a lot of firepower. He has won three times this year and won’t be backing up. Matt Kuchar, Paul Casey, Patrick Reed, and Jon Rahm are 5 back at -7 and are probably the only other players with a chance.