Conversation so far:
When did Ingemar Johansson become heavyweight champion?
Ingemar Johansson took the Scandinavian heavyweight title in 1953.
Who did Ingemar Johansson fight to win the Scandinavian Heavyweight Championsip in 1953?
Did Ingemar Johansson have any heavyweight championship losses?
In the June 1960 rematch against Floyd Patterson to defend his World Heavyweight Champion title, Ingemar Johansson was knocked out in the fifth round with a leaping left hook.
Did Ingemar Johansson have any problems?
Ingemar Johansson broke his right hand when he knocked down Erik Jensen and won the Scandinavian pro title. He was out of the ring until late 1954.
Are there any interesting aspects about the Ingemar Johansson article?
Ingemar Johansson was offered $100,000 to fight Muhammad Ali in a televised event but Johansson said that Ali did not have the ability to step in the ring with him.

Question: Who helped him train?
Self-contained rewrite: Who helped Ingemar Johansson train?