Any Examples of a boring fighter becoming Exciting?

Derrick Gainer was boring.... then become an exciting fighter. Then he went full circle and overstayed his welcome in boxing while becoming boring again.

 

Terry marsh .when he fought manley for the ibf title.boxer turned slugger.

 

I wouldn't call him boring but Whitaker changed his style after his first "loss" to Ramirez. Early on, he moved a lot more - after that loss, he moved in circles; he avoided shots and stayed on his bike without his back touching the ropes.

People wouldn't call him exciting but, for the best part of a decade, he threw 70+ punches a round without running. Maybe not exciting but eminently watchable.

 

Canelo Alvarez. He's shown big improvements and become a lot more exciting to watch since the Floyd fight. I remember Floyd vs Canelo was pretty uneventful. Canelo lets his hands go more now,and he's given us several highlight reel KO's recently.