Metcalf (hand) was a full practice participant Thursday, John Boyle of the Seahawks' official site reports.
Metcalf sat out Wednesday due to a hand injury, but his return one day later without limitations paves the way for him to suit up Sunday against the Dolphins. He'll thus continue to headline the Seahawks' Geno Smith-led passing game, which has amounted to 13 catches (on 18 targets) for 158 yards and one touchdown through two contests this season.