This would be a memorable fight. I can see Muhammad Landing some hard punches on Marciano. Who you got?
He took two bad beatings against Qawi, so he definitely isn't going to do better against Rock. I guess it would be memorable, if you're into severe maul jobs.
Marciano in a beating, Saad can’t keep him off nor does he have the defence to stay away, make him miss and counter on the backfoot, Marciano would find it easy to pin him down and find the gaps, he’d have a field day with the uppercut on the inside and the overhand right as he gets low, Saad would misjudge the distance and leave his feet in range too often.
Marciano gives everybody in history a good beating on these forums, so he'd thrash a 175 pounder like Saad easily, with one arm tied behind his back and blindfolded. Probably before he overwhelms George Foreman later that night.
Marciano was one of the greatest warriors in boxing history...Saad is in over his head in this fight!