Lakers defeat Boston on Kobe Bryant’s shot with 7.3 seconds left

The Lakers pulled out a 90-89 victory over the Boston Celtics today at TD Banknorth Garden because of the last-second offense by Kobe Bryant and the offense and defense by Ron Artest. But it wasn’t until Ray Allen missed a three-pointer just before time expired that the Lakers escaped with a victory, improving to 5-2 on this eight-game trip that ends in Memphis on Monday night. Bryant made a jumper over Allen with 7.3 seconds left for a 90-89 Lakers lead that turned out to be the winning basket. Bryant, who scored 19 points, remains 28 points shy of tying…