North Melbourne forward Mason Wood is now in doubt for round one after suffering a thumb injury during Friday's intra-club match.

Wood got tangled up with teammate Jamie Macmillan during the match and injured his thumb, with scans revealing the 24-year-old had suffered a crack in his thumb.

In good news, Wood is not expected to need surgery, although he will be on light duties for around three weeks.

โ€œHe doesnโ€™t require surgery and the crack is very small and the injury overall, a minor one,โ€ North Melbourne's GM of football, Cameron Joyce told North Media.

โ€œWe expect him to be available for Round 1 as heโ€™ll be able to complete all of the strength and conditioning components of the program.โ€

โ€œWeโ€™re probably looking at a period of about three weeks where heโ€™ll be limited in terms of contact, but he will be able to do most things and we donโ€™t think it will have a major impact on his readiness for the season opener.

โ€œHeโ€™s had an excellent pre-season up until now and that should hold him in good stead."