4. Nick Bockwinkel
Bobby Heenan managed AWA Superstar Nick Bockwinkel from the time the Brain joined the American Wrestling Association in 1974 until he left the promotion to join the World Wrestling Federation in 1984.
Under Heenan’s guidance, Bockwinkel won the AWA World Title 3 times and held it for a total of almost 7 years. Bockwinkel would only win the World Title one more time after Heenan had left the company.
https://www.youtube.com/watch?v=i7t0BRwaZh0
Rest in Peace Nick Bockwinkel
December 6, 1934 – November 14, 2015
