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Tiger Woods, Phil Mickelson and Co. will battle rain in the forecast at the U.S. Open. ESPN, 10 a.m.

THE BEST OF THE WEEKEND IN SPORTS

NASCAR road race

The circuit makes one of its two stops at a road course Sunday with the Toyota/SaveMart 350 in Sonoma, Calif. Witness a NASCAR rarity: right turns.

Nationals vs. Blue Jays

Back home, the Nationals face a journeyman and two rookies, including former Maryland pitcher Brett Cecil on Saturday.

Mystics vs. Sky

Off to their best start in franchise history, the Mystics return to Verizon Center - sans first-round pick Marissa Coleman - to face the similarly hot Chicago Sky on Saturday.

U.S. Open

If Bethpage ever dries out, we could be in for some great golf this weekend. There’s an unknown atop the leader board, and Tiger Woods, the defending champion and forever the favorite, is lurking at 1 over. But the tournament could drag on until Tuesday if the rain continues - which it’s supposed to do.

TWT FIVE ” Moments involving sports and rain

1. Three rain delays force the 2008 Wimbledon final between Roger Federer and Rafael Nadal to stretch to the cusp of dusk, only adding to the drama of a match widely called one of the best in history.

2. Game 5 of the 2008 World Series between the Phillies and Rays is suspended because of rain with the score tied at 2-2 in the sixth inning. More rain forces the game to be resumed two days later, when the Phillies clinch the title.

3. In 2007, Dario Franchitti wins the abbreviated Indianapolis 500. Fans are treated to the sight of his wife, actress Ashley Judd, in a rain-soaked sundress.

4. Hurricane Ike forces two late-summer games between the Astros and Cubs from Houston to Milwaukee’s Miller Park. The Astros lose both - being no-hit by Carlos Zambrano in the first game - before a pro-Chicago crowd.

5. China attempts, unsuccessfully, to prevent rain during the Beijing Olympics by seeding clouds before the games.