The ninth-seeded Panthers pulled off the biggest upset in the NCAA tournament, beating the top overall seed  69-67 in the second round on Saturday. The Jayhawks are the first No. 1 seed to fall in the opening weekend since 2004.

Sporting News: The demise of No. 1 Kansas at the hands of Northern Iowa, and the upsets of other top seeds, leaves us with many questions to consider as the tournament moves toward the Sweet 16.

Darius Miller scored a career-high 20 points and top-seeded Kentucky made easy work of No. 9 Wake Forest during a 90-60 rout Saturday night in the second round of the NCAA tournament.

Omar Samhan was an unstoppable Gael force and played the game of his career, finishing with 32 points and seven rebounds to lead 10th-seeded Saint Mary’s past Villanova 75-68 on Saturday and improbably into the NCAA tournament’s round of 16.

Jacob Pullen scored 20 of his career-high 34 points in the first half to help dig No. 2 seed Kansas State out of an early 10-point hole, and the Wildcats turned away Jimmer Fredette and BYU 84-72 on Saturday night in the second round of the NCAA tournament.

Quincy Pondexter scored 18 points, Isaiah Thomas added 15 and 11th-seeded Washington extended its incredible late-season roll all the way to the NCAA tournament’s regional semifinals with an 82-64 second-round victory over New Mexico on Saturday.

Paul Pierce scored 29 points, Rajon Rondo added 20 points and 10 rebounds, and the Boston Celtics stretched their winning streak to four games with a 102-93 victory over the Dallas Mavericks on Saturday night.

Even with Andrew Bogut ineffective and in foul trouble, the Milwaukee Bucks secured their signature road victory, beating the Denver Nuggets 102-97 on Saturday night.

Andy Roddick outlasted Robin Soderling to make the BNP Paribas Open final for the first time. The American will play for the title Sunday against Ivan Ljubicic, an upset winner over defending champion Rafael Nadal.

Shino Tsurubuchi, the line judge who was the target of Serena Williams' tirade at the U.S. Open, finally speaks about the incident.

Tennis.com: Angry and very honest following his tight three-set loss to Marcos Baghdatis at Indian Wells, Roger Federer proved he cares as much as ever about winning Masters events.

Tennis.com: When watching Roger Federer on TV, he appears to glide smoothly around the court, expending little energy in winning. But when you see him up close, it's apparent how much effort he puts into every movement and every point.

Timeline: Take a look at some of the best matches, biggest stories and most shocking upsets from 2009's tennis action.

Interactive: After analyzing the men’s tennis greats, Tracy Austin selects her top performers in a variety of strokes and court skills.

Jim Furyk played bogey-free Saturday with a round almost as flawless as the Florida weather, finishing off a 4-under 67 to build a three-shot lead at the Transitions Championship as he tries to win for the first time since the 2007 Canadian Open.

Johnny Miller and Dan Hicks answer a viewer's e-mail about how the fans will react to Tiger Woods' return at the Masters. (NBC Sports)

Msnbc's Alex Witt talks with Edgeofsports.com's Dave Zirin. (Other)

O'Neill: After all that has happened, is Tiger Woods still the best player of his time? Augusta can ask that question most succinctly. The challenge will be for Woods to provide the absolute answer.

Mike Celizic: Tiger Woods certainly hasn’t changed his approach to his public life or his business. The choice of Augusta shows that. It’s the most controlled and controllable venue in golf, or any other game. From Tiger’s point of view, it’s as risk-free as it gets.

Ventre: As career-defining disasters go, the one that Tiger Woods created is akin to the Hindenburg crashing into the Titanic. And that means his comeback — which begins with the Masters — will have to measure up to that magnitude.

Opinion: The self-righteous, self-promoting and self-appointed experts offering opinions and-or advice have provided Tiger Woods with enough motivation to last the rest of his golfing life.

It’s that time of year where horseplayers are making  lists, checking them far more than twice and constantly reordering them as their early picks for the Kentucky Derby bubble up, get knocked down a peg or drop out of the picture altogether.

If you think Bob Baffert likes finishing second in the Kentucky Derby, think again.

Rachel Alexandra holds off Derby winner Mine That Bird to become first female to win race since 1924. (NBC Sports)

Jockey Calvin Borel rides Mine That Bird from last to first to win the 135th Kentucky Derby. (NBC Sports)

Dale Earnhardt Jr. has a reason for optimism this weekend. Bristol's tough, half-mile oval has been his best track over the years with an average finish of 11.6.

Kyle Busch may be winless in 2010 and without a top-10 finish through four races, but the Joe Gibbs Racing driver will still roll into Bristol Motor Speedway as a favorite to win this weekend's NASCAR Sprint Cup Series race.

Opinion: While Kevin Harvick has nine top-five finishes in 18 Bristol races, two of his worst performances came last year when he finished 30th and 38th. He should be able to redeem himself this time around. Take a look at the top five and five to watch in the Food City 500.

Rotoworld: The Bullring in Bristol has been described a flying an airplane in a gymnasium. There will be no cars that escape Sunday's race without at least a little sheet metal damage. But look for Kyle Busch and Jimmie Johnson to weather the storm in the Food City 500.

Slideshow: Rotoworld.com predicts who will make a splash this season.

HBT: Mariners starting pitcher Cliff Lee, who will be re-evaluated next week, reportedly could miss the first week of the season.