There's a 50 percent chance of storms from 3 p.m. to 6 p.m. ET on Sunday, according to WTAE in Pittsburgh, and radar predictions indicate that the heaviest rain will fall around 4 p.m. The showers will likely be spotty, though, with intermittent sunshine between.

With three rounds of the U.S. Open at Oakmont Country Club complete, Sam Burns holds a one shot lead and will look to close it out on Sunday and win his first major championship. Burns entered the weekend with the lead after finding ways to tame some of Oakmont's challenges,

There's one round left in the U.S. Open at the Oakmont Country Club and even though Sam Burns maintained the one-shot lead he held at the beginning of the third round on June 14, numerous contenders behind him are ready to step into the breach should he falter.