File this away under odd NFL storylines you thought you'd never know.
For the first time in San Francisco 49ers, they'll be squaring off against a grandpa when they visit un-retired quarterback Philip Rivers and the Indianapolis Colts in Week 16 on Monday Night Football.
Rivers, 44 years old, came out of retirement after not having played since 2020 to help a desperate Indy squad that had just lost its starter, Daniel Jones, to a season-ending injury. And by performing admirably enough in Indianapolis' tough loss to the Seattle Seahawks in Week 15, Rivers is a quarterbacking threat the Niners have to take seriously.