Batman (With yellow ring) vs. Hal Jordan
So here's the scenario (as silly as it may be):
Batman, because of the amount of fear he causes, is sought out by a yellow power ring. Just for a change of pace, he decides to actually use it.
Hal Jordan, wary of these dangerous yellow rings, confronts Batman two months after he received the ring. Batman feels confident in his abilities after the two months of practice and wants Hal to mind his own business.
They fight in Gotham City.