Easy knockdown
At the beginning of the initial fight when your opponent
is approaching you, use your special power punch. This will stagger
him. When he approaches you again, hit him with another special
power punch, then attack him with an array of body punches. His
strength will drop. Keep attacking him to knock him down and thus
win the fight.
Career mode development
Max out your speed first, then your strength. This
helps in the matches because all you have to do is keep throwing
hooks, then when your opponent is dazed, use your Super Punch
to knock him down. After you have maxed out speed and strength,
you should be able to defeat all of your opponents with ease using
hooks.