Posted this in my operation thread but figured to post it here as well as I think it's an interesting spot and would love to see opinions on the hand as I think either of the choices on the river are valid.

Villain is 16/16/6 over only 25 hands, so really no read on them. On the turn I checked behind as the board was so co-ordinated to his range I dind't want to get c/r'd and have to fold rather than see the river and re-evaluate. On the river I tanked down to 2 seconds on timebank before making the call but the problem I have is I can't explain why I made the call and I think that is a problem....only reasonable explanation I can make is that I thought my turn check may have induced a bluff shove.

No-Limit Hold'em, $0.10 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

saw flop

Button ($10)
SB ($4.50)
BB ($20.85)
UTG ($10.40)
MP ($0.80)
Hero (CO) ($18.20)

Preflop: Hero is CO with A, A
UTG raises $0.30, MP calls $0.30, Hero raises $1.10, 3 folds, UTG calls $0.80, 1 fold

Flop: ($2.65) J, 6, 10 (2 players)
UTG checks, Hero bets $2.50, UTG calls $2.50

Turn: ($7.65) K (2 players)
UTG checks, Hero checks

River: ($7.65) 10 (2 players)
UTG bets $6.80 (All-In), Hero calls $6.80

Total pot: $21.25