Colts' Marlon Mack (hand) undergoes procedure, return 'TBD'

Indianapolis Colts running back Marlon Mack (hand) underwent a hand procedure Monday morning, ESPN's Adam Schefter reports.

What It Means:

Mack fractured his right hand in Sunday's win over the Jacksonville Jaguars. Schefter said he will be "out indefinitely," but added the procedure is not thought to be season-ending. Jordan Wilkins or Jonathan Williams will slot in as the Colts' primary runner on standard downs, with Nyheim Hines doing work on passing downs.

Mack has rushed for 862 yards and 4 carries on 192 carries this season.