The Facts: Williams provided a positive update Tuesday on his recovery from a torn anterior cruciate ligament. "Ran today first time since surgery and felt great #speed," the 49ers' wideout posted on his Twitter account, @KyleWilliams_10.

Diehards Line:It's been four months since Williams injured his left knee during a 31-21 win at the Superdome. That injury occurred on the same play in which running back Kendall Hunter tore an Achilles tendon. Two months ago, both Williams and Hunter returned to the Superdome with the 49ers in preparation for Super Bowl XLVII, and both said they expected to be fully recovered for the start of training camp in late July. Williams basically split time with Randy Moss as the 49ers' No. 3 wide receiver before sustaining the season-ending knee injury. Williams averaged an impressive 15.1 yards per catch (14 receptions, 212 yards, one touchdown). The three-year veteran will compete for a similar role in 2013, minus Moss, who is a free agent that isn't expected to return. While Michael Crabtree and Anquan Boldin are projected as the 49ers' starting wideouts, Mario Manningham is recovering from his own ACL tear, which occurred Dec. 23 against the Seattle Seahawks. Williams also could become a primary return specialist in the wake of Ted Ginn's departure for the Carolina Panthers.