Stances and Best way to fight:

Stances are very important in the game- it determines which will be your strong hand and your fast hand. The Right Handed Stance makes your right punches faster, but your left punches faster, and vice-versa with the Left Handed Stance.

I didn't use a lot of the Left Stance, but the times I used I didn't enjoy, so I'll talk about the Right Stance.

During the first seven fights (until you reach the 10th position), due to most opponents having a low speed gauge, the best strat is tiring them out with right body hooks (they are really vulnerable to those hits) and when they start to defend too much, alternate/hit with right uppercuts then go back to right body hooks until the opponent fall down.

This strat is really useful on the beginning. However, due to some RNG in the chart, you may face some enemies with a lot of speed, so if it goes wrong, reset and go all over again.

When you reach the top 10, you may change your strat depending of the opponent you'll face, assuming that with the right training items, you'll be near the max gauge on Power and Speed. You may continue the right body hook/right uppercut if you have a big speed gap against the next opponent.

However, if it ties or is just a bit behind your Speed Gauge, you'll use the Left Jab strat (if you are using the Right Handed stance). Since the opposite side of your stance is faster, you can use a lot of the body/head jabs to tire the opponent out and knock it down easily, since on the max speed gauge, you can stunlock the opponent with them.

What you'll need to do is switch between the left jabs (up and down) until you corner the opponent and then, keep punching up and down until the stamina gauge goes out and the enemy gets knocked down. This is really useful on the last fights and against Holyfield, which has max stats on everything, but still takes the jab stunlock if you corner him.