The שרו של עשו wrestles all night with Yaakov. It makes sense that he knows who his opponent is. Then Yaakov says "Bless me" [32-27] which means admit that I deserve the Brachos of Yitzchak [Rashi ibid]. Who else could this be but Yaakov?!!
The the שרו של עשו says "What is your name?"
Until now he didn't know his name???
ODD!!!
