(AP) — Shawn Johnson is calling it a career, ending her attempts at making a second Olympic team because of a lingering knee injury.  The Olympic gold medalist and 2007 world champion announced her retirement Sunday, four days before the start of the U.S. gymnastics championships. Johnson says her left knee, injured in a January 2010 ski accident, continued to slow her down, and she worried about the long-term damage if she kept competing.

The 20-year-old from West Des Moines, Iowa, was one of the biggest stars at the Beijing Olympics. Along with her gold on balance beam, she won silvers in the all-around, team competition and floor exercise. At the 2007 world championships, Johnson won the all-around, led the Americans to their third team title and took gold on floor.

ATLANTIC TROJANN TOURNAMENT:

1st Round:
Abraham Lincoln 7, A-H-S-T 2
Glenwood 15, Tri Center 4
Atlantic 7,- Audubon 3
Carroll 10, Red Oak 9
Second Round:
Creston 4, Abraham Lincoln 0
Tri Center 8, Walnut 1
Atlantic 6, Treynor 4
Underwood 8, Red Oak 0
Third Round:
Creston 11, A-H-S-T 3
Glenwood 16, Walnut 1
Treynor 10, Audubon 3
Carroll 16, Underwood 4
Championship Games:
Glenwood 7, Creston 0
Carroll 7, Atlantic 0
Consolation Games:
Tri Center 5, Abraham Lincoln 0
Underwood 11, Treynor 3
Walnut 11, A-H-S-T 6
Red Oak 5, Audubon 1
All Tournament Team:
Angelene Enke-9-AHST, Marissa Berns-12-Atlantic, Brittany Bauman-11-Carroll, Lauren Janning-10-Carroll, McKenna Henze-11-Glenwood, Lisa Nebel-11-Glenwood, Bailey Starner-10-Glenwood, Alex Snyder-12-Treynor, Katelynn Dilts-11-Underwood, Lauren Nahnsen-9-CBAL, Lacey Vokt-12-Audubon, Madison Frain-12-Creston, Gabrielle French-12-Red Oak, Malory Christiansen-11-Tri Center, Alyssa Becerra-10-Walnut.

MISSOURI VALLEY TOURNAMENT

1st Round:
Missouri Valley 12, West Harrison 0 (3 inn.).
West Monona 4, Thomas Jefferson 3.
Lewis Central 11, Woodbine 1 (5 inn.).
Logan-Magnolia 11, St. Albert 4.

Consolation Semi-Finals:
West Harrison 3, Thomas Jefferson 1.
Woodbine 10,  St. Albert 6.

Championship Semi-Finals:
Missouri Valley 13, West Monona 3 (6 inn.).
Lewis Central 8, Logan-Magnolia 4.

Finals:

• 7th Place: C.B. Thomas Jefferson 10, C.B. St. Albert 3
• 5th Place: West Harrison 7, Woodbine 4
• 3rd Place: Logan-Magnolia 16, West Monona 6 (5 inn.)
• 1st Place: Missouri Valley 10, Lewis Central 3

Other scores:

• Albia 11, Clarinda 6
• Denison-Schleswig 14, Storm Lake 2
• Emmetsburg 6, Denison-Schleswig 2
• Van Meter 13, IKM-Manning 2

CLARINDA TOURNAMENT
Glenwood 10, Clarinda 3
Abraham Lincoln 2, ADM 1
Consolation: ADM 18, Clarinda 3
Championship: Glenwood 6, Abraham Lincoln 3

NODAWAY VALLEY TOURNAMENT
Nodaway Valley 7, Orient-Macksburg 6
Perry 11,  Mount Ayr 3
Consolation: Mount Ayr 2, Orient-Macksburg
Championship: Perry 11, Nodaway Valley 1

Other scores:

• Atlantic 4, Winterset 2 (Gunnar Blum hit HR, Chris McVey complete game win)
• Corning 13, Red Oak 7
• Pleasantville 13, Coon Rapids-Bayard 2 (5 inn)
• Treynor 13, Corning 0
• Kuemper Catholic 7, Ft. Dodge St. Edmond 5
• Kuemper Catholic 12, Remsen St. Mary’s 6
• St. Albert 7, Denison-Schleswig 0

NEW YORK (AP) – R.A. Dickey followed up Johan Santana’s no-hitter by shutting out St. Louis, David Wright homered and the New York Mets beat the Cardinals 5-0 on Saturday. Dickey (8-1) gave up seven hits, struck out nine and walked none in his third career shutout – first this season. The Mets scored three runs in the second, on a mishandled grounder and two run-scoring groundouts to win for the sixth time in eight games.
 
Carlos Beltran had a clean double against Dickey in the second inning – a day after he hit a shot down the line that looked fair but was ruled foul against Santana. The Cardinals have lost four straight and seven of nine.

WEST DES MOINES, Iowa (AP) – Jay Haas will carry a three-shot lead into the final round of the Principal Charity Classic after shooting a 6-under 65 on Saturday. Haas, who won the Champions Tour event at Glen Oaks Country Club in 2007 and 2008, will try to become the first golfer to win three times in Iowa. He is at 11 under following his bogey-free performance in the second round.  Larry Mize eagled the 18th hole to get within three of Haas at 8 under. 
 
 Tom Lehman is four strokes back, followed by Andrew Magee at 6 under. Fred Funk and Kenny Perry lead four players at 5-under 137.  First-round leader Mike Goodes shot 3-over par on the front nine and is 4 under for the tournament.

WEST DES MOINES, Iowa (AP) — Mike Goodes brought a two-shot lead into today’s second round of the Champions Tour’s Principal Charity Classic. Jay Haas, who won in Iowa in 2007 and 2008, led a group at 5-under 66 that included South African David Frost and former Masters champion Larry Mize.