Gravity Games

Bikers, skateboarders and motocross riders descended on Pennsylvania last month. The only tricks skateboarder Bam Margera pulled were on the ramps of Philadelphia's FDR Skatepark. The MTV prankster made his return to competition after a four-year absence at the games. OLN 5 p.m.

All-American High School Baseball Classic

The battle of the top 2006 prospects will feature a pretty big unit: Dellin Betances (right), a 6'9" righthander from Brooklyn whose fastball has been clocked in the mid-90s. He'll pitch for the East team in the third annual game. Last year Justin Upton played shortstop for the East; in June he was taken No. 1 overall in the draft by the Diamondbacks. FSN 2 p.m.

PGA Championship

Last year Vijay Singh used the season's final major as a springboard. After winning his second PGA, Singh won four of his final eight tournaments and took over the top spot in the world rankings. He has since ceded it to Tiger Woods, who will be his top competition at Baltusrol in Springfield, N.J. "I'm playing better this year," warns Singh, who is trying to become the fifth man to win the PGA at least three times. (The final round is on Sunday.) CBS 2 p.m.


AVP Huntington Beach Open

Midway through the Nissan Championship Series, Olympic gold medalists Misty May-Treanor and Kerri Walsh hold a narrow lead over Rachel Wacholder (left) and Elaine Youngs--the pair that broke their 50-match winning streak last month at the Cincinnati Open. NBC 4:30 p.m.


Human Frailty

Hubert Davis's moving Oscar-nominated documentary, Hardwood, tells the story of two families--one in Vancouver, the other in Chicago--linked by former Harlem Globetrotter "Frail" Mel Davis, the filmmaker's father. On the road with the team in the 1960s, Mel met Megan Carvell, a white 18-year-old student from Vancouver; Mel calls it "love at first sight," But he didn't feel comfortable dating a white woman; he saw interracial marriage as "impossible." So after years of keeping his relationship with Carvell under wraps, Mel married a black woman, Mary Etta Allen, though he continued to see Carvell. Both women had sons (Carvell gave birth to Hubert in 1975), and Mel lived a double life for years, popping in and out of both households. The film features frank interviews with the two families. Talking about the pain caused by Mel--who now coaches youth basketball in Vancouver, where he is married to Carvell--proved cathartic. "In telling [my family's] story," Hubert says, "I changed the direction of my life." PBS 10 p.m.


Battle of the Network Reality Stars

What does living in the jungles of Borneo or facing Donald Trump in the boardroom prepare you for? Taking part in an update of the '70s classic Battle of the Network Stars, of course. More than 30 reality stars compete in events such as the joust, tug-of-war and kayak race. Bravo 9 p.m.

World Cup Qualifying, Trinidad and Tobago vs. U.S.

The last time these teams met, on Feb. 9, the Americans won 2--1 behind Eddie Johnson (far right) in Port of Spain. But after last month's Gold Cup, the U.S. is banged up. "We'll rally the troops, get the Band-Aids out and have 11 guys on the field," said coach Bruce Arena. ESPN2 8 p.m.