He played principally as an offensive tackle for 15 seasons in the National Football League (NFL), mostly with the Minnesota Vikings.
Hall of fame Minnesota coach Bud Grant said of Alderman, "'He was a great leader, respected, smart and played left tackle which is a very valuable position on the field and was good at it.
[6] In 2021, the Professional Football Researchers Association named Alderman to the PFRA Hall of Very Good Class of 2021.
[6] After leaving the Bears, for the next four years Alderman did color commentary for radio broadcasts of the Vikings' games.
[12] # denotes de facto general manager Head coach: Norm Van Brocklin