INDIANAPOLIS -- Rookie quarterback Riley Leonard will be Daniel Jones ’ primary backup for this week’s game against the Los Angeles Chargers.

The Colts have signed veteran Brett Rypien to the practice squad, but Rypien was not able to fly to Indianapolis until Wednesday, leaving Rypien little time to learn the offense.

Leonard, a sixth-round pick out of Notre Dame, has been serving as the Colts ’ scout-team quarterback in practice and the team’s emergency quarterback on Sundays.

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