Your San Francisco 49ers did not play Sunday, because they have the Monday Night Football game against the Indianapolis Colts tonight at 5:15 pm PT (KGO and ESPN). But their idle Sunday was still a productive one to celebrate, as the Chronicle reports the 49ers still clinched a playoff spot Sunday, even though they did not even play. The 49ers are in the playoffs by virtue of the Detroit Lions' 29-24 loss to the Pittsburgh Steelers Sunday,