Today's forecast calls for about a 50% chance rain throughout the morning, according to AccuWeather, with a slight break about the time the final pairings are scheduled to tee off in the afternoon. But that gives way to a 60% chance of rain starting about 5 p.m. through close to sunset.

The Masters champion has had five birdies and three bogeys and looks poised to card his first under-par round at Oakmont at the sixth attempt (stretching back to the 2016 tournament). He's currently tied for 35th. Each of this quartet leads the field in at least one metric through three rounds.