Ravens coach John Harbaugh is expected to sign a contract extension in the coming weeks, according to a source with knowledge of the situation. Harbaugh is entering the last year of a four-year deal he signed in January 2019, and it’s long been owner Steve Bisciotti’s preference to avoid such “lame duck” scenarios at head coach. The Ravens are coming off their first season without a playoff berth since 2017, but the 59-year-old Harbaugh has made a postseason appearance in nine of his 14 seasons in Baltimore.