Hours after Pat Riley insisted he didn't want to dismantle his roster, the Heat players gave their coach more incentive to do just that.

Continuing to prove there is no limit to the depths this team can plummet, the Heat on Friday subjected its fans to another error-filled, uninspired effort in a 91-86 loss to the Memphis Grizzlies.

``It's just not working,'' Riley said. ``We've known that for two weeks. Fumble around, stumble around. They forget plays. I've been trying to jolt them for 27 games. We can't beat these teams. It's disturbing. Unless the leadership stands up, I don't think anybody's listening.''

A night after squandering a 19-point lead at Atlanta, Miami again struggled against a zone defense, committing 20 turnovers. Making matters worse, the Heat shot 6 for 15 on free throws, compared with the Grizzlies' 22 of 31.

``We've become soft defensively,'' Riley said. ``There wasn't one time I felt we had any kind of focus. I don't think we made the effort.''

The Heat (5-22) lost for the fifth straight time overall and the 11th time in its past 12 home games. ``We built a great arena, we've got players we take care of, and to go on that court and lose 11 of 12 is absolutely ridiculous,'' Riley said.

Miami, which never led after the first quarter, stands just two games ahead of the 27-game pace of the 1988-89 expansion Heat, which finished 15-67.

``It's very surprising they have a record like this,'' said Grizzlies forward Grant Long, a member of the Heat's expansion team. ``It's not indicative of the talent they have. But you can't be good all the time. At some point, you're going to have to rebuild.''

The $86 million men -- Brian Grant and Eddie Jones -- again came up empty. Grant went to the bench with his second foul 2:28 into the game and finished with two points on 1-for-8 shooting. ``Some changes have to take place,'' said Grant, who didn't elaborate.

Jones, who declined comment, shot 4 for 16 and scored 12.

There were other conspirators:

Alonzo Mourning had 20 points and 12 rebounds, but missed two dunks and committed six turnovers.

Rod Strickland committed three turnovers and couldn't slow Jason Williams, who barely missed a triple-double with 19 points, 12 assists and nine rebounds. Strickland's strained groin bothered him, and Eddie House played point guard for most of the fourth.

Chris Gatling committed three turnovers and slowed a Heat rally by forcing two misses early in the fourth.

LaPhonso Ellis shot 1 for 4 and is 4 for his past 24.

The Heat broke the franchise record by failing to reach 100 points for the 27th straight game. That's two short of the NBA record, shared by Orlando and Chicago.

Point guard Anthony Carter, who missed his fourth straight game, wants to practice a few more times before deciding whether to undergo surgery on a strained lower abdominal muscle.