Lynch expects better 49ers defensive effort in Super Bowl vs. Chiefs

SANTA CLARA — General manager John Lynch knows what a Super Bowl-winning defense looks like and the 49ers did not exemplify that consistently in their win over the Detroit Lions in the NFC Championship Game last Sunday. "Effort is a non-negotiable," Lynch sternly said Friday. "That's one of our core values. I believe that in my heart of hearts. We've got four Hall of Famers that represent the defense I played with in Tampa and if you ask every one of us that played on that defense what was our calling card and it starts with effort, that being a non-negotiable." In the second quarter of the NFC title game, Lions running back Jahmyr Gibbs ran past several 49ers defenders for a 15-yard touchdown, stretching Detroit's lead to 14 points. While many players lunged at the ball carrier, he barely was touched as he crossed the goal line. "Those things have been addressed," Lynch said. "You've got one game. I would really be shocked if we saw that again. Sometimes that comes — there are excuses for it but they are just that. They are excuses and that has to be non-negotiable. Play your heart out." The 49ers regrouped in the locker room at halftime, playing well enough in the second...