Trevor Ariza said today that he would guarantee that he would not make the same mistake he made Tuesday night in not fouling Andre Iguodala of the Philadelphia 76ers when the Lakers had a foul to give in the closing seconds. Iguodala’s 3-pointer at the buzzer made the Lakers losers.

Ariza also said he would guarantee that the Lakers would not cough up a third consecutive double-digit lead when they face the Golden State Warriors on Thursday night. The blew leads of 15 points in a victory Sunday over the Dallas Mavericks and 14 points in Tuesday’s loss to the 76ers.

Asked if the Lakers’ lack a killer instinct, Ariza merely laughed. “Nah, I don’t think that’s what it is,” he said. “I just think we kind of relax when we shouldn’t. We take things for granted a little bit, but I guarantee you that (squandering a big lead) won’t happen again.”