PORT ADELAIDE vice-captain Zak Butters has been cleared of serious injury to his ankle following Friday's AAMI Community Series match.
Butters sprained his ankle during the first quarter and was removed for the remainder of the game as a precautionary measure.
An MRI confirmed no major structural injury, with the midfielder expected to be available for Round 1.
Dante Visentini is tracking well after entering concussion protocols from a head knock in training last week, while Lachlan Charleson will be assessed this week as he recovers from an ankle sprain.
Quinton Narkle has been managing some discomfort in his back but has returned to running and is likely to re-join training in the coming days.
Port Adelaide will open its season on Sunday, 17 March against West Coast at Adelaide Oval.
Injury list
Zak Butters (ankle) - test
Lachlan Charleson (ankle) - test
Dante Visentini (concussion) - 1 week
Quinton Narkle (back) - 2-3 weeks
Kyle Marshall (back) - 3-4 weeks
Tom McCallum (ankle) - 4-5 weeks
Hugh Jackson (hip) - 14-16 weeks