Wochit News - 49ers released DT Darnell Dockett. Dockett was signed to a two-year, $7.5 million contract that included $2 million guaranteed in April. He was supposed to help replace retired DE Justin Smith. Dockett had been operating as a sub-package pass rusher in camp and preseason, but apparently wasn't showing much coming off his 2014 torn ACL. Dockett turned 34 earlier this year.