49ers RB Brandon Jacobs scratched despite being healthy

When Brandon Jacobs signed with the San Francisco 49ers in the offseason, he likely imagined he'd be getting a lot more playing time as Frank Gore's backup. Injuries kept him sidelined for much of the early season, but after he was healthy, he still wasn't seeing the field. Jacobs has just five carries for seven yards on the season.

Jacobs' frustrations boiled over on Twitter and Instagram this week as he sparred with fans after he complained about his sub-par season. Whether his public complaints about his playing time caused him to be a healthy scratch from yesterday's 27-13 win over the Miami Dolphins remains a mystery as head coach Jim Harbaugh didn't address Jacobs' situation after the game.

Jacobs could only watch as rookie running back LaMichael James carried the ball eight times for 30 yards and had a 15-yard reception as Gore's backup. Anthony Dixon made his debut in the 49ers backfield with two carries including one for a touchdown.

The 49ers will face two consecutive road tests when they head east next Sunday to face the New England Patriots before playing their bitter division rival, the Seattle Seahawks, the following weekend.