The Giants announced the signing Sunday.
The 11th pick overall in 2013, Fluker started 61 of 66 regular-season and postseason games for San Diego over the last four seasons. He was released on Tuesday by the Chargers.
Fluker started 31 games in the regular season and two playoff games at right tackle in his first two seasons. He started 12 games at right guard in 2015, and all 16 last season.
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