OAKLAND, Calif. -- Injured Arizona Cardinals defensive lineman Darnell Dockett had a truth-hurts message to Oakland Raiders fans when he scribbled "0-6, worst team in football" on a sideline board at the end of another defeat suffered by the home team.

While Dockett doesn't get sportsmanship points, his crude memo is difficult to combat. The Raiders very much look like the NFL's worst club.

The Raiders made numerous critical miscues in the second half of a game that they took themselves out of, a 24-13 home defeat to Arizona on Sunday. Oakland is the NFL's last winless team -- thanks to Jacksonville's victory over Cleveland -- and has lost 12 straight dating back to last November.

Frankly, victory doesn't appear to be lurking around any corner. After playing at Cleveland next Sunday, the Raiders face Seattle, Denver, San Diego and Kansas City, all playoff teams from 2013.

"This is as bad as you're going to get through the first part of the season," veteran Raiders safety Charles Woodson said. "We haven't won a game. How much worse can it get than that, than not winning a game?"

Sunday's game was the second under interim coach Tony Sparano since the firing of coach Dennis Allen. Yes, the Raiders have given effort and they have shown some spark under Sparano, but the bottom line remains the same --- when it's time to make a play, the Raiders have come up short.

Allen called it failing "at the moment of truth." Sparano's flash phrase is "Oakland beating Oakland." Both doses of coach-speak were applicable Sunday.

Though the Raiders pulled within 14-13 in the third quarter, they never truly looked like they were in position to win. The reason? They kept making mistakes. There was a cascade of blunders in the second half on both sides of the ball.

The third quarter ended with three straight incompletions by rookie quarterback Derek Carr after Oakland had a first down at the 50-yard line and trailing 21-13.

On Arizona's first possession of the fourth quarter, which started at its own 13, the Raiders let them off the hook with 15-yard roughing-the-passer penalty on linebacker Sio Moore on third down, and then a third-and-9 conversion a few plays later.

On Oakland's next possession, it could only muster five offensive plays. The Cardinals then iced the game on a field goal drive that lasted 6:53 and gave them a 24-13 lead. The Cardinals converted on third-and-8 twice in that series.

Arizona was 9-for-15 on third-down conversions. Oakland came into the game allowing a league-high 51.4 conversion percentage on third down. It was the worst in the NFL. Oakland has a lot of problems, but getting off the field on defense is the biggest. The Raiders held the ball for just 23:03.

"We just have to find a way to win, find a way defensively to get off the field, find a way offensively to keep moving the ball on third down," Oakland cornerback Carlos Rogers said. "When it's crunch time we have to be the ones that make that play and not the other team."