[Perk76]

Range is alot wider than just a st8. Run pokerstove vs a range that you think he has and see how 99 fairs.

CO can do this with an over pair, all the two pair hands, AJ, maybe 77, 1010, 88, QJ. Thats a wide range and all reasonable.

I like Shove here due to stack sizes. Since your posting, it prob was QJ. My guess would be JJ.