49ers hang on to beat Cardinals, but win may prove to be too costly

Source: New York Post

SANTA CLARA — Three games into the season, the San Francisco 49ers finally got their first test. Addressing the team in the locker room after hanging on for a 36-30 win over the Arizona Cardinals to improve to 3-0, coach Kyle Shanahan told the Niners as much. “Our first two games, I don’t think we had to play four quarters,” he said.