FILE - Miami Dolphins coach Don Shula, center, is carried off the field after his team won the NFL football Super Bowl game over Washington Redskins in Los Angeles, Jan. 14, 1973. It can be argued — and has been for decades — that a perfect record including winning a championship makes that team the best in its sport. And maybe the 1972 Miami Dolphins wouldn't have matched up with, say, the great Steelers dynasty of the later 1970s. Or the dominant 49ers of the 1980s. Or the Cowboys Triplets of the 1990s. No matter: Miami owns the only unblemished record in the Super Bowl era. (AP Photo/File)

FILE - Washington Redskins head coach Bill Callahan watches the second half of an NFL football game against the Buffalo Bills, Nov. 3, 2019, in Orchard Park, N.Y. Callahan was head coach of the Oakland Raiders where he lost a Super Bowl to his former boss Jon Gruden. He also was head coach of Washington in 2019. (AP Photo/Adrian Kraus, File)

FILE - Houston Texans defensive coordinator Wade Phillips, right, and his father, Bum Phillips look on before an NFL football training camp practice Aug. 3, 2011, in Houston. Bum lost two AFC championship games as head coach of the Houston Oilers. His son Wade coached 42 years in the NFL as both a head coach and longtime defensive coordinator, reaching three Super Bowls and winning only one. (AP Photo/David J. Phillip, File)

FILE - Los Angeles Rams tight ends coach Wes Phillips looks on before an NFL football game against the Chicago Bears, Sept. 12, 2021, in Inglewood, Calif. Phillips got his coaching start in the NFL working for his father in 2007 when Wade Phillips was hired as head coach of the Dallas Cowboys. (AP Photo/Kyusung Gong, File)

FILE - Cincinnati Bengals offensive coordinator Brian Callahan looks on before an NFL football game against the Seattle Seahawks, Sept. 8, 2019, in Seattle. Callahan will be at Super Bowl 56 against the Los Angeles Rams in Inglewood, Calif., Sunday, Feb. 13, 2022. (AP Photo/Stephen Brashear, File)

Los Angeles Rams head coach Sean McVay gestures during practice for an NFL Super Bowl football game Thursday, Feb. 10, 2022, in Pasadena, Calif. The Rams are scheduled to play the Cincinnati Bengals in the Super Bowl on Sunday. (AP Photo/Mark J. Terrill)

Cincinnati Bengals head coach Zac Taylor answers questions during a press conference following the team's NFL football practice Friday, Feb. 11, 2022, in Los Angeles. The Cincinnati Bengals play the Los Angeles Rams in the Super Bowl Sunday Feb. 13. (AP Photo/Marcio Jose Sanchez)