In the often risk-averse NFL, each Harbaugh made a critical change late in the regular season in a bid to boost his team's postseason chances. Clearly, both moves worked.
After 49ers quarterback Alex Smith, the starter in last season's overtime NFC title game loss to the Giants, got a concussion, Jim switched to Kaepernick for Week 11 — and never switched back. Now San Francisco has its first three-game winning streak of the season, at precisely the right time.
Baltimore, meanwhile, was in the midst of a three-game losing streak when John fired offensive coordinator Cam Cameron and promoted quarterbacks coach Jim Caldwell to replace him.
The 50-year-old John is 15 months older than Jim and generally the less demonstrative of the pair, although John certainly did not lack intensity while making his case with officials a couple of times Sunday.
The ever-excitable Jim — who was treated for an irregular heartbeat in November — was up to his usual sideline antics in Atlanta.
He spun around and sent his headset flying when the original call stood after he threw his red challenge flag on a catch by the Falcons. He hopped and yelled at his defense to get off the field after their key fourth-down stop with less than 1½ minutes left. He made an emphatic-as-can-be timeout signal with 13 seconds remaining.
Expect CBS to fill plenty of time during its Super Bowl broadcast with shots of Jim, that trademark red pen dangling in front of his chest, and John, who usually wears a black Ravens hat. That is sure to be a focal point, right up until they meet for a postgame handshake in two weeks' time.
AP Sports Writer Janie McCauley in San Francisco contributed to this report.
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