New York Knicks coach Derek Fisher and Memphis Grizzlies forward Matt Barnes had a physical confrontation on Saturday night in Los Angeles, sources told Yahoo Sports. Fisher had traveled to California on Saturday to visit his children and was visiting the house that Barnes shared with his estranged wife, Gloria Govan, the former star of the "Basketball Wives LA" reality show, sources said. Barnes, who had concluded Grizzlies training camp in Santa Barbara, arrived at the house and a physical confrontation ensued on Saturday night, sources said.