Washington Commanders running back Brian Robinson Jr. was ruled out of the second half Sunday with an injured hamstring. Robinson was one of the few effective players for Washington early in the game in the game vs. the Miami Dolphins, carrying the ball seven times for 53 yards as the Commanders trailed 31-7 at halftime. Robinson leads Washington with 660 yards rushing this season; he tied his career-long with a 29-yard run in the second quarter. Antonio Gibson replaced Robinson as the primary back with Chris Rodriguez serving as his backup.