An examination of four hot issues from the San Francisco 49ers' 31-17 victory against the Tennessee Titans:49ers are hot: The 49ers have won four straight games after starting 1-2. They are 5-2 and play the winless Jacksonville Jaguars in London on Sunday before the bye. The 49ers are clicking in all three phases of the game. San Francisco has scored at least 31 points in all four games. The 49ers have scored 30 or more points five times. It is the second most in the league behind Denver, which has scored 30 or more points in all seven games.