Reuben Foster’s Return Should Help 49ers Defense

The 49ers built a big lead against the Detroit Lions Sunday, then almost let a victory get away.At the end of the third quarter, San Francisco led 27-13. The Niners then had to hold on against a Lions barrage to take away a 30-27 victory.Obviously, the defense needs to get better – fast – with the high-scoring Chiefs and Chargers next up on the schedule.Fortunately, Reuben Foster is arriving just in time.The outstanding second-year linebacker, suspended for the first two games of the season for violating NFL rules, is eligible to return this week to solidify a defense that will need all the help it can get against a Kansas City offense that suddenly looks like one of the most dynamic in the league behind young starting quarterback Patrick Mahomes. Through two games, Mahomes is completing 69.1 percent of his passes, is averaging 10.6 yards per pass attempt and has 10 touchdown passes vs. zero interceptions. Kansas City's attack includes explosive running back Kareem Hunt and a corps of playmaking wideouts in Tyreek Hill and Sammy Watkins, as well as tight end Travis Kelce.Adding Foster to the starting lineup could be an enormous boost. Foster was a Rookie of the Year...