Hamm (undisclosed) was placed on practice squad injured reserve Thursday.
Hamm was signed to the Colts practice squad on Nov. 21 but will spend the rest of the season on injured reserve. He will likely work to make an NFL roster during 2019 training camp.
Hamm was waived by the Chargers on Saturday, Ricky Henne of the team's official site reports.
Hamm was originally claimed off waivers by the Chargers in mid-August, but was essentially a preseason body for a team thin at tight end. He hasn't seen regular season action since appearing in five games with the 49ers during the 2016 campaign.
Hamm was waived by the Seahawks on SundayBob Condotta of The Seattle Times reports.
Sunday marks the second time in the last three weeks that the Seahawks have waived Hamm. His second stint with the team lasted only six days. He will hope to find his way onto another roster before training camp concludes.
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