49ers sign NT Ian Williams to 2-year deal

The San Francisco 49ers have signed nose tackle Ian Williams to

a two-year contract extension.

The deal announced by the team Monday will carry Williams

through the 2015 season. He was third on the depth chart last

season behind Isaac Sopoaga and Ricky Jean Francois, who are both

free agents.

San Francisco signed Williams as an undrafted free agent out of

Notre Dame in July 2011. He has seven tackles in four games over

the past two seasons.

The 23-year-old Williams is a native of Altamonte Springs, Fla.

He had 161 tackles, two interceptions and 1 1/2 sacks in 45 games

for the Fighting Irish.