After failing their tackling test in Week 1 the 49ers will face a beastly exam Sunday night when they meet a noted nemesis Seahawks running back Marshawn Lynch.

Lynch 5-foot-11 and 215 pounds is one of the NFL’s more capable tackle-breaking machines. Last year he broke free from 63 tackles ranking fourth in the NFL according to Pro Football Focus and continued his brilliance against the 49ers.

Lynch has had three straight 100-yard games against San Francisco dating to Week 16 of the 2012 season. During that span the 49ers have allowed just two 100-yard rushers in their other 21 games.