NBA power rankings 2012: Cavs fall to No. 28

The Cleveland Cavaliers dropped three spots to No. 28 in SB Nation's latest NBA power rankings.

The Cavaliers were winless last week, losing to the Brooklyn Nets, Dallas Mavericks and Philadelphia 76ers and falling to 2-8 on the season. Sunday's loss to the 76ers marked their sixth straight loss.

Kyrie Irving has been the one-man show for Cleveland, averaging 22.9 points and 5.6 assists, but when Irving is off, as he was against Philadelphia on Sunday, no one else steps up. Irving scored only nine points Sunday, so the Cavaliers scored only 79 points.

Seth Rosenthal writes that for the Cavaliers, winning is a long shot for them regardless, but on the nights Irving is off his game, its a virtual impossibility.

You're not allowed to have injuries or off nights anymore, Kyrie Irving. Think of the children! (Honestly, though, that's only the beginning of the problem. Cleveland's defense with or without Irving is yucky.)

The Cavaliers host Philadelphia before traveling to play the Orlando Magic and Miami Heat this week.

The 8-1 Memphis Grizzlies, at the top of the rankings, swept their four-game schedule last week, including double- digit wins against the Thunder, Heat and Knicks. They carry an eight-game win streak into their Monday night contest with the Denver Nuggets.

For complete NBA power rankings, click here.