Chicago Bears Brock was selected by the
Chicago Bears in the second round (20th overall) of the
1962 NFL draft and by the
Houston Oilers in the eighth round (63rd overall) of the
1962 AFL draft. Even though he was a reserve for most of his college career, he was chosen by the Bears because of his measurables and performance as a blocker. On August 30, he was waived after struggling in the Shrine game against the
Green Bay Packers.
Dallas Cowboys On September 2,
1962, the
Dallas Cowboys claimed him off waivers. He was a reserve player on both offense and defense. In
1963, he focused on being a
defensive tackle, before being released on October 14.
San Francisco 49ers On October 16,
1963, he was claimed off waivers by the
San Francisco 49ers. He was a backup
offensive lineman that appeared in 6 games before being released on August 25,
1964.
Saskatchewan Roughriders It was only when Brock got to the
Saskatchewan Roughriders in
1964 that he became a standout at
right offensive tackle, playing his entire career with the Green Riders. He received CFL All-Star recognition in 4 consecutive years, from
1966 to
1969. He helped the franchise win its first
Grey Cup championship in
1966, a 29–14 win over the
Ottawa Rough Riders. He appeared in 159 games during his
CFL career and retired after the
1975 season. He was inducted into the
Canadian Football Hall of Fame as a player in 2020. ==Personal life==