The Minnesota Vikings signed Tiano Pupungatoa, an undrafted guard from South Dakota State who participated this spring in the team’s rookie minicamp on a tryout basis.

The Vikings also signed rookie long snapper Austin Cutting, the seventh-round draft pick from Air Force whose two-year military service requirement needed to be scheduled around team activities before his contract could be finalized.

Running back Roc Thomas was waived, a week after the NFL issued him a three-game suspension for violating league policy on substances of abuse. Thomas was sentenced to three years of probation in May after pleading guilty to marijuana possession.