WR Crabtree tears right Achilles tendon

FILE - In this Aug. 18, 2012 file photo, San Francisco 49ers' Michael Crabtree (15) reaches for a pass as he's grabbed by Houston Texans' Brice McCain (21) in the first quarter an NFL preseason football game in Houston. 49ers leading wide receiver Crabtree is not on the practice field for We…

Orb wins the Kentucky Derby

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

Orb wins the Kentucky Derby

Joel Rosario monta a Orb para llevarse la victoria durante la 139na ediciÛn del Derby de Kentucky en Churchill Downs, el s·bado 4 de mayo de 2013, en Louisville, Kentucky. (Foto AP/David J. Phillip)

NBA Playoffs: Rockets, Nets avoid elimination

Houston's Chandler Parsons, right, scored 27 points as the Rockets held off the Thunder to force a Game 5 Wednesday in Oklahoma City.

Politics on hold at Bush library opening

"It's impossible to truly understand the nature of the job until it's yours," President Obama said of the presidency during the dedication ceremony on Thursday. With him, from left, are former presidents George W. Bush, Bill Clinton, George H.W. Bush and Jimmy Carter.

George W. Bush Presidential Center dedication

Former President George W. Bush, center, shares a laugh with his wife, former first lady Laura Bush, and father, former President George H.W. Bush, during the dedication of the George W. Bush Presidential Center, Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

George W. Bush Presidential Center dedication

From left, President Barack Obama, former president George W. Bush, former president William J. Clinton former President George H.W. Bush and former president Jimmy Carter arrive for the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David…

George W. Bush Presidential Center dedication

From left, First Lady Michelle Obama, President Barack Obama, former first lady Barbara Bush, former president George H.W. Bush and Laura Bush applaud former president George W. Bush after his speech during the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in…

George W. Bush Presidential Center dedication

From left, President Barack Obama, former president George W. Bush, former president William J. Clinton, former President George H.W. Bush and former president Jimmy Carter arrive for the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/Davi…

George W. Bush Presidential Center dedication

Former President George W. Bush, accompanied by his wife former first lady Laura Bush, flashes the "W" sign after his speech during the dedication of the George W. Bush Presidential Center, Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

George W. Bush Presidential Center dedication

Former president George W. Bush hugs his wife Laura Bush during the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

George W. Bush Presidential Center dedication

Jenna Bush Hager, left and her sister Barbara arrive for the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

George W. Bush Presidential Center dedication

Former South Korean Lee Myung-bak, left, speaks with Italian Prime Minister Silvio Berlusconi before the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

George W. Bush Presidential Center dedication

Former presidential adviser Karen Hughes arrives for the dedication of the George W. Bush Presidential Center, Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

George W. Bush Presidential Center dedication

Secret Service officers keep watch from a rooftop as guests arrive for the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

George W. Bush Presidential Center dedication

First Lady Michelle Obama, left, and President Barack Obama, center, share a laugh with former first lady Barbara Bush gestures during the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

Masters notebook: Australians have their day at Augusta with 3 in top 4

Jason Day of Australia misses a birdie putt on the 18th hole that would have put him back in the lead.

The Masters: Still Tiger's tournament

Arnold Palmer watches his tee shot during Wednesday's par-3 competition at the Masters. The tournament begins with today's first round.

NCAA Championship game: Overlooked programs face off in spotlight

Louisville coach Rick Pitino, right, and Michigan boss John Beilein do a TV interview a day before their teams face off for the national title.

Final Four: Michican 61, Syracuse 56: Wolverines solve tough zone defense of Syracuse

Syracuse's James Southerland sticks with Michigan's Glenn Robinson III on a first-half shot. Robinson is one of three freshman who start for the Wolverines.

South final: No. 4 Michigan vs. No. 3 Florida: Channeling Fab Five

Michigan's Trey Burke, left, Corey Person and Mitch McGary (4) celebrate Friday night's 87-85 comeback win over Kansas in overtime.

NCAA tournament Sweet 16: FGCU run great, just not elite

"Dunk City" is usually used to describe Florida Gulf Coast, but this time it's Florida's Casey Prather slamming one over FGCU's Christophe Varidel.

NCAA tournament Sweet 16: FGCU run great, just not elite

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NCAA tournament Sweet 16: FGCU run great, just not elite

Florida's Mike Rosario breaks from the pack in the first half. Rosario scored 15 points and led the Gators to their third straight Elite Eight.

Midwest and South Sweet 16: A Trey to remember

Trey Burke releases his game-tying three-pointer near the end of regulation. Burke had eight points, including two threes, down the stretch.

Spring Training: Hope springs infernal: Astros, Marlins likely to face hellish years

Outfielder J.D. Martinez and the Houston Astros will join the tough American League West this season.

Animal shots of the week

Susie Chefer, of Jacksonville, Fla., points to another practice field as she holds the leash of her dog Roise while attending a Washington Nationals spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

Brandon Laird

Houston Astros infielder Brandon Laird, left, yawns while stretching during a spring training baseball workout Saturday, Feb. 16, 2013, in Kissimmee, Fla. (AP Photo/David J. Phillip)

Super Bowl XLVII pregame

San Francisco 49ers players warm up before the NFL Super Bowl XLVII football game against the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/David J. Phillip)

In memory of brave explorers

A piece of space shuttle debris sits on the ground outside Bronson, Texas, Saturday, Feb. 1, 2003. Space shuttle Columbia broke apart in flames 200,000 feet over Texas on Saturday, killing all seven astronauts just minutes before they were to glide to a landing in Florida. (AP Photo/David J.…

Animal shots of the week

Jenna McMullen walks her dog Abigail during the Mystic Krewe of Barkus parade Sunday, Jan. 27, 2013, in New Orleans. (AP Photo/David J. Phillip)

BCS championship game: No. 2 Alabama 42, No. 1 Notre Dame 14: Tide's dynasty swells

Eddie Lacy, the game's offensive MVP, snares an 11-yard TD pass to help give Alabama a 28-0 halftime lead. Lacy also ran for 140 yards and a score.

Texas builds 'hurricane domes' for double duty

Work continues on a new domed gym at Edna High School in Edna, Texas. The hurricane dome is being built in part with money from the Federal Emergency Management Agency.

Best Wire Photos of 2012

Samantha Arevalo Salinas of Ecuador starts in a women's 800-meter freestyle swimming heat at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London.

Best Wire Photos of 2012

Jamaica's Usain Bolt crosses the finish line to win gold in the men's 100-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics in London.

Bird counts give climate clues

A blue heron takes flight during the Christmastime census on Mad Island, Texas.

Petraeus admits extramarital affair, quits as CIA chief

Gen. David Petraeus enjoys the limelight with his wife, Holly, at the 2009 Cardinals-Steelers Super Bowl in Tampa, Fla.

NFL cheerleaders, week 9

Houston Texans cheerleaders perform before an NFL football game against the Buffalo Bills Sunday, Nov. 4, 2012, in Houston. (AP Photo/David J. Phillip)

NFL cheerleaders, week 9

Houston Texans cheerleaders perform before an NFL football game against the Buffalo Bills Sunday, Nov. 4, 2012, in Houston. (AP Photo/David J. Phillip)

NFL cheerleaders, week 9

Houston Texans cheerleaders perform before an NFL football game against the Buffalo Bills Sunday, Nov. 4, 2012, in Houston. (AP Photo/David J. Phillip)

NFL cheerleaders, week 9

Houston Texans cheerleaders perform before an NFL football game against the Buffalo Bills Sunday, Nov. 4, 2012, in Houston. (AP Photo/David J. Phillip)

World Series: Giants 4, Tigers 3: Giants make their pitch for greatness

The Giants' Ryan Theriot comes home with the decisive run past Tigers catcher Gerald Laird after Marco Scutaro's RBI single in the 10th inning.

World Series: Fister gives it his best shot, takes one, too

A trainer looks at Detroit Tigers starting pitcher Doug Fister after he is hit in the head with a line-drive single by San Francisco's Gregor Blanco.

World Series: Giants 8, TIgers 3: 3 historic hacks for Panda

San Francisco left fielder Gregor Blanco slides on the grass after snagging a sinking line drive off the bat of Detroit's Miguel Cabrera in the third inning. Blanco and the rest of the Giants put in another solid defensive effort behind winning pitcher Barry Zito.

World Series: Zito definitely earning his money now

San Francisco pitcher Barry Zito has revived his career and is justifying a seven-year, $126 million contract he signed six years ago.

Ryder Cup: Europe pulls off stunner of a rally

Jose Maria Olazabal, captain of the European Ryder Cup team, breaks down at the closing ceremony. "Seve (Ballesteros) will always be present with this team," he said.

Rookie Bradley is a spark for Americans

Rookie Keegan Bradley could not control his excitement. "This is literally what I've dreamt about since I was a little kid," he said.

Steve Stricker at the Ryder Cup

USA's Steve Stricker hits a drive on the sixth hole during a practice round at the Ryder Cup PGA golf tournament Thursday, Sept. 27, 2012, at the Medinah Country Club in Medinah, Ill. (AP Photo/David J. Phillip)

Space shuttle Endeavour's last stop

Joey Morrison adjusts his space helmet after watching the shuttle aircraft carrier with space shuttle Endeavour atop, land Wednesday, Sept. 19, 2012, at Ellington Field in Houston. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it w…

Space shuttle Endeavour's last stop

Space shuttle Endeavour sits atop NASA's Shuttle Carrier Aircraft, or SCA, Wednesday, Sept. 19, 2012, at Ellington Field in Houston. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/David J.…