A few spring to mind Forrest losing to Mora Williams to Quintana Witter to Bradley The first two were probably bigger upsets, however, they were both avenged.
I think the stoppage was a surprise, but the fight itself wasn''t an upset, I remember Marquez being a pretty solid favourite beforehand.
i picked jmm by stoppage because casamayor looked pretty bad in his last two fights before this one. jmm also was the favorite and will be the favorite against juan diaz.