The Spurs won their third in a row, taking advantage of a weary opponent that was playing for the third time in four nights.
San Antonio outscored the Mavericks by 13 in the third quarter to break things open. The Spurs played without Manu Ginobili, who is suffering from a hamstring strain, and Dallas was missing Shawn Marion, who injured a shoulder in Tuesday's victory over the Los Angeles Lakers.
It was the Spurs' seventh straight win over Dallas.
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