Mediocre session

I played for a while yesterday while babysitting a test at work.  I was sharp at the beginning of the session and was up ~$200, which I then lost flopping bottom two pair against top two pair in a blind v. blind hand.  Towards the end of the session, I ran into a few unfortunate situations and made one call that was unforgivable.  From being up ~$200, I was down $330 pretty quickly.

End result: -$336.70

I did make a few really good calls, one with a naked ace high:

Full Tilt No-Limit Hold'em, $2.00 BB (6 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

CO ($338.65)
Button ($240.80)
SB ($251.15)
BB ($417)
UTG ($255.55)
Hero (MP) ($674.75)

Preflop: Hero is MP with A, 8
1 fold, Hero bets $6, 1 fold, Button calls $6, 2 folds

Flop: ($15) 4, 7, 6 (2 players)
Hero bets $10, Button calls $10

Turn: ($35) 9 (2 players)
Hero bets $25, Button calls $25

River: ($85) 7 (2 players)
Hero checks, Button bets $55, Hero calls $55

Total pot: $195 | Rake: $3

Results:

Button had 8, J (one pair, sevens).
Hero had A, 8 (one pair, sevens).

Outcome: Hero won $192

I think this call is actually pretty standard.  A huge chunk of his range is draws that miss on the river: flush draws, 5's, or some sort of 8 that backed into an open ended straight on the turn.  The only hand that really makes sense is 75 suited or 78 suited.