ATLANTA(AP) Acie Law's dunk with 4.5 seconds left lifted the Atlanta Hawks to an 88-87 preseason win over the Charlotte Bobcats on Monday night.

Law started at point guard in place of Mike Bibby, who was out with a strained right oblique muscle. The second-year player scored 12 points.

Joe Johnson paced the Hawks (3-1) with 17 points, Josh Smith added 16 and Al Horford grabbed nine rebounds. Atlanta also got contributions from its two major offseason acquisitions; Maurice Evans had 12 points and Flip Murray 11.

Jason Richardson, the only Charlotte player in double figures until the closing minutes, scored 19 points to lead the Bobcats. D.J. Augustin, the Bobcats' first-round pick, ninth overall, had 11 points, six assists and three rebounds in 25 minutes. Raymond Felton doled out 11 assists.

The Bobcats have yet to win in three preseason games.

Notes: Atlanta F Marvin Williams sat out the second half after spraining his left thumb in the first quarter. ... Bibby could be back for Wednesday's game against Phoenix but is more likely to return for Saturday's rematch against the Bobcats in Charlotte. ... Hawks G Speedy Claxton missed his fourth consecutive preseason game with a pulled hamstring. He expects to practice Thursday.