Houston remained tied with Phoenix for the fifth seed in the Western Conference. Both teams are 2 1/2 games behind conference-leading New Orleans.
Seattle had a 45-44 lead less than two minutes into the second half but managed to score only 21 points the rest of the game. The SuperSonics shot just 30 percent from the field.
Bobby Jackson added 13 points for Houston, which finishes a five-game road swing Sunday against the Los Angeles Clippers.
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