As Kellen Moore said after the New Orleans Saints initially trimmed their squad to 53 players, the roster would be a fluid thing in the first few weeks of the season.

After waiving rookie edge rusher Fadil Diggs Monday — a move that came days after he signed to the active roster from the practice squad — the Saints filled his open roster spot by signing tight end Jack Stoll to the active roster, according to a league source.

Stoll opened the season on the practice squad , but New Orleans elevated him to its game-day roster for the Week 1 game against the Arizona Cardinals. Stoll played 18 offensive snaps against the Cardinals, ranking second among Saints tight ends.

The 27-year-old Stoll has filled the Saints' blocking tight end role while Foster Moreau recovers from offseason knee

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