Can anyone give me some fights where fighter loses by KO and KOs opponent in rematch?

[moochi]

A rematch being an immediate return fight or within a realistic like vs like fight... not years later when certain fighters are retired and coming back for a payday (e.g Brewster or Margarito and potentially McCall).

[Chollo Vista]

Vazquez Marquez

[kiDynamite92]

Not a KO but Klitschko vs Brewster was a stoppage.

[Rockybigblower]

Amir Khan and ....oh wait

[champion4ever]

Louis/Schmelling

Patterson/Johansson

Lewis/McCall

Lewis/Rahman

Klitschko/Brewster

[Tony Trick-Pony]

Tony Zale KOs Rocky Graziano.
Graziano KOs Zale in rematch.
Zale KOs Graziano in rubber match.
Volatile.

[_Rexy_]

He made Rahman an emotional wreck midway through the fight

he broke his brain