Dixon signed a contract with the Rams on Tuesday.
Dixon was released by the Giants on Thursday.
The Giants activated Dixon from the reserve/COVID-19 list Monday.
The Giants placed Dixon on the reserve/COVID-19 list Wednesday.
Dixon signed a three-year extension with the Giants on Sunday, Jordan Raanan of ESPN.com reports.
Dixon was traded from the Broncos to the Giants for a 2019 conditional seventh-round pick, Ian Rapoport of NFL Network reports.
The Broncos selected Dixon in the seventh round of the 2016 NFL Draft, 228th overall.