Images of world sport: Down and dirty

Horses run around a muddy track during the ninth race before the 139th Kentucky Derby at Churchill Downs Saturday, May 4, 2013, in Louisville, Ky. (AP Photo/J. David Ake)

Horses run around a muddy track during the ninth race before the 139th Kentucky Derby at Churchill Downs Saturday, May 4, 2013, in Louisville, Ky. (AP Photo/J. David Ake)

Joel Rosario rides Orb reacts after the 139th Kentucky Derby at Churchill Downs Saturday, May 4, 2013, in Louisville, Ky. (AP Photo/Darron Cummings)

Joel Rosario rides Orb reacts after the 139th Kentucky Derby at Churchill Downs Saturday, May 4, 2013, in Louisville, Ky. (AP Photo/Darron Cummings)

A participant of the first extreme run "Barjot Run" makes its way through the mud in Biere, Switzerland, Saturday, May 4, 2013. Around 700 participants have to run a 5 or 10 km track with mud, artificial obstacles and water. (AP Photo/Keystone, Laurent Gillieron)

A participant of the first extreme run “Barjot Run” makes its way through the mud in Biere, Switzerland, Saturday, May 4, 2013. Around 700 participants have to run a 5 or 10 km track with mud, artificial obstacles and water. (AP Photo/Keystone, Laurent Gillieron)

LaPorte's Emma Dickson takes a forearm to the neck from teammate Bailey Severs as the two were charging a Chesterton infield blooper near second base during a high school softball game Friday, May 3, 2013, in LaPorte, Ind. Dickson was slightly injured but stayed in the game. (AP Photo/LaPorte Herald-Argus, Bob Wellinski)

LaPorte’s Emma Dickson takes a forearm to the neck from teammate Bailey Severs as the two were charging a Chesterton infield blooper near second base during a high school softball game Friday, May 3, 2013, in LaPorte, Ind. Dickson was slightly injured but stayed in the game. (AP Photo/LaPorte Herald-Argus, Bob Wellinski)

Texas Rangers' Elvis Andrus, right, is tagged out by Boston Red Sox shortstop Pedro Ciriaco (23) after he was caught off second base during the first inning of a baseball game Friday, May 3, 2013, in Arlington, Texas. (AP Photo/LM Otero)

Texas Rangers’ Elvis Andrus, right, is tagged out by Boston Red Sox shortstop Pedro Ciriaco (23) after he was caught off second base during the first inning of a baseball game Friday, May 3, 2013, in Arlington, Texas. (AP Photo/LM Otero)

Boston Red Sox's Stephen Drew, right, tries to beat a tag by Minnesota Twins catcher Joe Mauer on a double by Jacoby Ellsbury during the fifth inning of a baseball game at Fenway Park in Boston, Monday, May 6, 2013. Drew was out on the play. (AP Photo/Charles Krupa)

Boston Red Sox’s Stephen Drew, right, tries to beat a tag by Minnesota Twins catcher Joe Mauer on a double by Jacoby Ellsbury during the fifth inning of a baseball game at Fenway Park in Boston, Monday, May 6, 2013. Drew was out on the play. (AP Photo/Charles Krupa)

Samantha Stosur from Australia serves against Carla Suarez Navarro from Spain during the Madrid Open tennis tournament, in Madrid, Monday, May 6, 2013. (AP Photo/Andres Kudacki)

Samantha Stosur from Australia serves against Carla Suarez Navarro from Spain during the Madrid Open tennis tournament, in Madrid, Monday, May 6, 2013. (AP Photo/Andres Kudacki)

Phil Mickelson reacts as he nearly makes a shot from a sand trap on the fourth hole during the second round of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Friday, May 3, 2013. (AP Photo/Chuck Burton)

Phil Mickelson reacts as he nearly makes a shot from a sand trap on the fourth hole during the second round of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Friday, May 3, 2013. (AP Photo/Chuck Burton)

Ronaldinho of Brazil's Atletico Mineiro, left, and Wellington of Brazil's Sao Paulo FC battle for control of the ball during a Copa Libertadores soccer match in Sao Paulo, Brazil, Thursday, May 2, 2013. (AP Photo/Andre Penner)

Ronaldinho of Brazil’s Atletico Mineiro, left, and Wellington of Brazil’s Sao Paulo FC battle for control of the ball during a Copa Libertadores soccer match in Sao Paulo, Brazil, Thursday, May 2, 2013. (AP Photo/Andre Penner)

Baltimore Orioles' Nolan Reimold breaks his bat as he lines out during the eighth inning of their baseball game against the Los Angeles Angels, Sunday, May 5, 2013, in Anaheim, Calif. (AP Photo/Mark J. Terrill)

Baltimore Orioles’ Nolan Reimold breaks his bat as he lines out during the eighth inning of their baseball game against the Los Angeles Angels, Sunday, May 5, 2013, in Anaheim, Calif. (AP Photo/Mark J. Terrill)

Fans try to catch a bat that Arizona Diamondbacks' Cody Ross lost on his swing during the first inning of a baseball game against the San Francisco Giants, Tuesday, April 30, 2013, in Phoenix. (AP Photo/Matt York)

Fans try to catch a bat that Arizona Diamondbacks’ Cody Ross lost on his swing during the first inning of a baseball game against the San Francisco Giants, Tuesday, April 30, 2013, in Phoenix. (AP Photo/Matt York)

Boca Juniors' Lautaro Acosta, below, fights for the ball with  River Plate's Leandro Gonzalez Pirez  during an Argentina's league soccer match in Buenos Aires, Argentina, Sunday, May 5, 2013.  (AP Photo/Natacha Pisarenko)

Boca Juniors’ Lautaro Acosta, below, fights for the ball with River Plate’s Leandro Gonzalez Pirez during an Argentina’s league soccer match in Buenos Aires, Argentina, Sunday, May 5, 2013. (AP Photo/Natacha Pisarenko)

After making a three-point basket against the San Antonio Spurs, Golden State Warriors point guard Stephen Curry (30) his helped when he fell into the seats during the second half of Game 1 of a Western Conference semifinal NBA basketball playoff series, Monday, May 6, 2013, in San Antonio. (AP Photo/Eric Gay)

After making a three-point basket against the San Antonio Spurs, Golden State Warriors point guard Stephen Curry (30) his helped when he fell into the seats during the second half of Game 1 of a Western Conference semifinal NBA basketball playoff series, Monday, May 6, 2013, in San Antonio. (AP Photo/Eric Gay)

Cristie Kerr is hugged by Irene Cho, right, as Kerr celebrates winning the Kingsmill Championship LPGA golf tournament in Williamsburg, Va., Sunday, May 5, 2013. Kerr made a short par putt on the second hole of a sudden-death playoff with Suzann Pettersen for the victory. (AP Photo/Steve Helber)

Cristie Kerr is hugged by Irene Cho, right, as Kerr celebrates winning the Kingsmill Championship LPGA golf tournament in Williamsburg, Va., Sunday, May 5, 2013. Kerr made a short par putt on the second hole of a sudden-death playoff with Suzann Pettersen for the victory. (AP Photo/Steve Helber)

Golfer  Fred Couples becomes emotional as he speaks during his induction into the World Golf Hall of Fame on Monday, May 6, 2013, in St. Augustine, Fla. (AP Photo/The Florida Times-Union, Bob Self)

Golfer Fred Couples becomes emotional as he speaks during his induction into the World Golf Hall of Fame on Monday, May 6, 2013, in St. Augustine, Fla. (AP Photo/The Florida Times-Union, Bob Self)

Floyd Mayweather Jr. lands a left jab against Robert Guerrero in the fifth round during a WBC welterweight title fight, Saturday, May 4, 2013, in Las Vegas. (AP Photo/Rick Bowmer)

Floyd Mayweather Jr. lands a left jab against Robert Guerrero in the fifth round during a WBC welterweight title fight, Saturday, May 4, 2013, in Las Vegas. (AP Photo/Rick Bowmer)

The pack climbs a hill after leaving the littoral street near Salerno in Southern Italy during the fourth stage of the Giro d'Italia, Tour of Italy cycling race, a hilly and lengthy 246-kilometer (153-mile) leg from Policastro Bussentino to Serra San Bruno, Tuesday, May 7, 2013. It is the second-longest leg of this year's Giro. (AP Photo/Fabio Ferrari)

The pack climbs a hill after leaving the littoral street near Salerno in Southern Italy during the fourth stage of the Giro d’Italia, Tour of Italy cycling race, a hilly and lengthy 246-kilometer (153-mile) leg from Policastro Bussentino to Serra San Bruno, Tuesday, May 7, 2013. It is the second-longest leg of this year’s Giro. (AP Photo/Fabio Ferrari)

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