Analysis: Allen wrapped up his Hall of Fame career on the 49ers’ 2006-07 losing teams, and while he’s easily their most talented guard the past 25 years, the top spot in this exercise goes to Iupati (three Pro Bowls, 2012 All-Pro). Second team: Jonathan Goodwin Honorable mention: Alex Mack, Daniel Kilgore, Eric Heitmann, Jake Brendel

The 49ers just lost 29-17 to the Miami Dolphins. Here are the 49ers' grades for this performance. QUARTERBACK: C Brock Purdy played well until the final two minutes of the game. That's when he needed to lead a touchdown drive in 2 minutes and 10 seconds with his team down by 5 points.

San Francisco 49ers at Miami Dolphins Preview: The 6-8 San Francisco 49ers travel to Miami to take on the 6-8 Dolphins. After making the playoffs in the last two seasons, both teams are in danger of missing the playoffs.