Steve Nash scored 30 points and added eight assists, and the Phoenix Suns used a dominant fourth quarter to beat the Miami Heat 104-96 in a matchup of NBA unbeatens Tuesday night.

Amare Stoudemire finished with 16 points and 11 rebounds for Phoenix, which overcame its largest deficit of the season and used a 13-4 run over the middle portion of the fourth to pull away. Jason Richardson scored 10 of his 14 points in the final period for the Suns, who are 4-0 for the first time since the 2004-05 season.

Miami got 23 points from Dwyane Wade and 18 from Quentin Richardson. The Heat (3-1) were bidding for their first 4-0 start in five years, and only the second in the franchise's 22-year history.

Phoenix came in averaging an NBA-best 117.3 points per game, and struggled during many stretches of the first three quarters.

The fourth, all Suns.

Jared Dudley's driving three-point play with 7:03 left put Phoenix up 87-84, and for good. Nash capped it with 2:13 left, dribbling away from a Miami double-team, darting down the left side of the lane for a right-handed layup _ while getting fouled. The free throw made it 102-93.

The Heat were a mere 5 for 23 from the floor in the final 12 minutes, while Phoenix shot 10 of 16.

Grant Hill scored 10 points with 12 rebounds for the Suns. Jermaine O'Neal _ playing with a broken nose _ scored 14, Michael Beasley added 12 and Udonis Haslem finished with 10 points and 13 rebounds for the Heat.

Miami led 26-23 after the opening quarter, which represented a small victory: It was Phoenix's lowest-scoring period of the season. The Suns had scored 24 on three occasions.

Points were even tougher for Phoenix to come by in the second. Continued...