OK, so with one left behind I was unsure whether to push and isolate or let him come along and call. I figured the BB for a weaker hand since he didn't come over the top, but who knows.

I really wasn't sure how to play it when the ace came on the flop. I was regretting let him in cheap. How would you have played all streets?

The river bet was a total waste asking to get raised...a flop bet to find out about the ace early or maybe a turn bet would have been in order with his check behind. Or would a total checkdown be ok?

I'm thinking lead the flop.

MP1 50/20
BB 52/20

Ultimate Bet
No Limit Holdem Ring game
Blinds: $0.10./$0.25.
9 players
Converter

Stack sizes:
UTG: $25.50
UTG+1: $57.95
MP1: $10.35
MP2: $29.05
MP3: $12.50
CO: $10
Button: $21.45
adobery: $22.95
BB: $36.80

Pre-flop: (9 players) adobery is SB with K K
UTG folds, UTG+1 calls, MP1 raises to $0.5, MP2 folds, MP3 calls, CO calls, Button folds, adobery raises to $3.1, BB calls, UTG+1 folds, MP1 raises all-in $10.25, 2 folds, adobery calls, BB calls.

Flop: ($32) 2 8 A (2 players + 1 all-in - Main pot: $32)
adobery checks, BB checks.

Turn: ($32) 6 (2 players + 1 all-in - Main pot: $32)
adobery checks, BB checks.

River: ($32) 2 (2 players + 1 all-in - Main pot: $32)
adobery bets $5, BB folds.
Uncalled bets: $5 returned to adobery.

Results:
Final pot: $32