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San Antonio Spurs' Danny Green (4) goes up between Portland Trail Blazers' Luke Babbitt (8) and Nolan Smith (4) during the first quarter of an NBA basketball game, Monday, April 23, 2012, in San Antonio. San Antonio won 124-89. (AP Photo/Eric Gay)

Spurs clinch top seed by beating Blazers

Tim Duncan scored 18 points as the San Antonio Spurs clinched the top spot in the Western Conference after beating the Portland Trail Blazers 124-89 on April 23.