Fights where the winner had a significant size advantage. Name them.

[DoktorSleepless]

Chavez - Zibik
Afredo Angulo - Cosme Rivera

[Thread Stealer]

Gatti-Gamache
Numerous Lewis and Klitschko fights
Not in weight, but the height advantage that Spinks had over Qawi was almost comical.

[-Huey-]

JMM vs Pac 3. (Marquez 40 years old, moved up 2 divisions and still schooled Pac, but Pac got the gift nod)

JMM vs Floyd. (Floyd was about 20lbs heavier than JMM)

Cotto vs Margarito 1. (Margarito way taller, bigger, and wore plastered wraps and took ephedra)

[UmissUpay]

I'll start:

Hopkins vs Trinidad

Hopkins vs Delahoya

Hopkins vs Pavlik

Floyd "elbow rowl" Mayweather over Lightweith Marquez

[DoktorSleepless]

JMM vs Floyd. (Floyd was about 20lbs heavier than JMM)

The highest we have ever seen FM at is 150. And somehow he's 160+ against Marquez? I call bull on this.

[Slyboots]

Chavez Jr vs Zbik.

edit: oops, looks like Doc Sleepless beat me to that one.

[J-Smooth]

pavlik - martinez

[MikeRo1972]

Alvarez > Matthew Hatton
Donaire > Sydorenko
Khan > Peterson
Ortiz > Nate Campbell
Chavez Jr > Lylle
Bute > Brinkley

[Elotero]

Alvarez > Matthew Hatton
Donaire > Sydorenko
Khan > Peterson
Ortiz > Nate Campbell
Chavez Jr > Lylle
Bute > Brinkley

Donaire 5'7 vs Montiel 5'4, Narvaez 5'3, Sidorenko 5'4, Concepcion, 5'4, Martinez 5'4, Marquez 5'2, etc.

[D4thincarnation]

I'll start:

Hopkins vs Trinidad

Hopkins vs Delahoya

Hopkins vs Pavlik

Valuev vs everyone he beat