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DALLAS (AP) -- The Miami Heat didn't blow this one. Now they're just two wins from being crowned NBA champions.

Chris Bosh made a go-ahead jumper from the baseline with 39.6 seconds left and the Heat held on for an 88-86 victory over the Dallas Mavericks on Sunday night for a 2-1 lead in the NBA finals.

Miami was up 81-74 with 6:31 left, but Dirk Nowitzki scored 12 straight points to tie it for Dallas. Yet he couldn't finish the comeback, throwing a pass out of bounds and missing a tough jumper over Udonis Haslem as time expired.

Recent history says this is a huge win for the Heat. The Game 3 winner in a tied finals has won the championship all 11 times since the 2-3-2 format began in 1985.

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