Port Adelaide great Kane Cornes has unloaded on Carlton following Thursday night's 21-point loss to Collingwood.

The Blues slumped to a 0-2 record for the ninth straight year, with only five of the last 58 teams recovering from that mark to play finals.

It builds pressure on David Teague's team in a season where expectations at Ikon Park are the highest they have been in several years, coming off an off-season coup where they acquired Adam Saad and Zac Williams.

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Cornes, who is never shy to dish out some criticism to the Blues, took aim at the club's back six, in particular Lachie Plowman.

“New year, same Carlton,” Cornes told SEN's The Captain’s Run.

“They have invested in their midfield and running defence during the trade period, but perhaps they should have turned their attention to their key defenders.

“Jamie Elliott was matched up on the highly frustrating Lachie Plowman – and Plowman made Elliott look like Gary Ablett Snr in the first term.

“Plowman was moved off Elliott onto De Goey after quarter time – it took De Goey one minute to kick another goal on him and if it wasn’t Elliott or De Goey outmarking Plowman, it was (Will) Hoskin-Elliott.