49ers build big lead and hold on to beat Commanders

SANTA CLARA, Calif. — Brock Purdy threw a touchdown pass, Christian McCaffrey ran for two scores and the San Francisco 49ers held on to beat the Washington Commanders 23-17 on Monday night for their sixth straight win to open the season. The Niners followed up an emotional win last week at division rival Seattle by building a 20-point lead and holding off the Commanders (1-4-1) with two late defensive stops. Jayden Daniels threw two touchdown passes in the second half to cut a 20-point deficit to 23-17, but Malik Mustapha broke up a fourth-down pass to Treylon Burks near the…