Carlton will regain defender Nick Duigan from a calf injury for Sunday's AFL match against the resurgent Western Bulldogs.

The mature-age rookie has impressed in his debut season and he will come in for Simon White, who has a hamstring injury.

Coach Brett Ratten said they could also make another unforced change for the twilight clash at Etihad Stadium.

The Western Bulldogs are regaining form after a slow start to the season, with key players such as Adam Cooney among their best in last Friday's easy win over Melbourne.

The Bulldogs have also tinkered with their playing style, although Ratten said this is as much due to personnel changes as any different tactics.

Ratten added they will back themselves against the Bulldogs and not over-analyse Sunday's opposition.

The Blues are third and coming off a 103-point demolition of Richmond.

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