And am I beat here? If you call turn are you calling a river shove and why?

$0.25/$0.5 No Limit Holdem
5 players
Converted at

Stacks:
UTG ($50.40)
CO ($46.70)
BTN ($50.30)
Hero ($83.75)
BB ($59.70)

Pre-flop: ($0.75, 5 players) Hero is SB [Qs]
1 fold, CO calls $0.5, 1 fold, Hero raises to $2.5, 1 fold, CO calls $2

Flop: [9c][3h] ($5.5, 2 players)
Hero bets $4, CO raises to $8, Hero calls $4

Turn: ($21.5, 2 players)
Hero checks, CO bets $10.75

I would call and fold to a river shove. (unless it were a Q)

Often a miniraise on the flop means a draw of some kind so that they can get a free card on the turn.
I would seriously raise him on the flop here and see what it means.

If he flat calls that he has A9, set or is a donk. A reraise is a fold without any reads. If he is slightly donkish I am propably paying off.

The way you played I am calling this and making a blocking bet on the river which does not have to be very big in order to scare him.

Faced with a raise I would fold.

Unless he's an absolute retard and thinks his ATo is the nuts the minraise kinda smells like two pair to me. In his notes I had him labelled as an Ace Master

That flop MR usually means he has a weakish ace (like AT) and wants to know where he is...I prolly CR the turn.