Glen Coffee the back up to Frank Gore, has not showed up for practice the past two days. There's a good reason for it, he has retired. The 49ers drafted Coffee in 2009 in the third round. Rookie Anthony Dixon and not Michael Robinson will now be the back up to Frank Gore, but shouldn't impact either fantasy value. No story out on why he's decided to make this choice, but as soon as the report is out we will post it here. For more on this click here.