Bob Weir sat in with Tim Flannery & The Lunatic Fringe at Napa, CA’s Uptown Theatre last night. The Grateful Dead/Furthur guitarist emerged at the end of the San Francisco Giants coach’s first set for “Catfish John,” “Mama Tried,” “Big River” and “Friend of the Devil.” Weir sang lead on “Catfish John,” “Mama Tried” and “Big River,” and he traded verses with Flannery on “Friend of the Devil.”

The show was a benefit for Giants fan Bryan Stow, who was beaten in the parking lot of Dodgers Stadium on opening day last spring. The benefit raised approximately $40,000 for Stow and his family.

The performance was part of a busy week for Weir, which included both a TRI webcast and a Sweetwater appearance with his group RatDog. There is a good chance he may also be one of the unannounced “friends” scheduled to sit in with Steve Kimock at Sweetwater this evening.