Williams signed a one-year, $2.6 million deal with the Warriors on Tuesday, Shams Charania of ESPN reports.
Williams is coming off a successful campaign with the Mavericks. Across 66 regular-season appearances, he averaged 13.0 points, 3.9 assists, 2.9 rebounds and 0.5 three-pointers. Minutes won't be easy to come by in Golden State, however, so he's likely going to be an emergency depth option.