I'm EV- when I flop TPTK

45 hands is not a big sample, so I'll post hands for review
I think I'm making systematic mistakes in how I approach these hands

I have no idea who these people are since these hands are not new, but the stats say 12/7/1 for this hand
Hand 1:
Full Tilt No-Limit Hold'em, $0.25 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

MP3 ($5)
CO ($38.10)
Button ($4.30)
Hero (SB) ($32.60)
BB ($24.90)
UTG ($25)
UTG+1 ($18)
MP1 ($24.05)
MP2 ($29.45)

Preflop: Hero is SB with K, A
5 folds, CO raises to $1, 1 fold, Hero raises to $3.25, 1 fold, CO calls $2.25

Flop: ($6.75) J, 7, A (2 players)
Hero bets $3.50, CO raises to $7, Hero calls $3.50

Turn: ($20.75) A (2 players)
Hero bets $9, CO raises to $18, Hero raises to $22.35 (All-In), CO calls $4.35

River: ($65.45) 2 (2 players, 1 all-in)

Total pot: $65.45 | Rake: $3

this guy is 16/9/2.5
Full Tilt No-Limit Hold'em, $0.25 BB (8 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

SB ($25.50)
BB ($32.10)
UTG ($23.60)
UTG+1 ($37.25)
MP1 ($24.80)
Hero (MP2) ($33.80)
CO ($49)
Button ($12.95)

Preflop: Hero is MP2 with K, A
3 folds, Hero raises to $0.75, CO calls $0.75, 3 folds

Flop: ($1.85) 9, 6, K (3 players)
Hero bets $1.85, CO raises to $4.85, Hero calls $3

Turn: ($11.55) 8 (3 players)
Hero checks, CO bets $7.50, Hero calls $7.50

River: ($26.55) 10 (3 players)
Hero bets $5, CO calls $5

Total pot: $36.55 | Rake: $1.80

15/0/infinity over like 13 hands so I can't really judge other than he's not super-loose
Full Tilt No-Limit Hold'em, $0.25 BB (8 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

CO ($31.75)
Button ($31.40)
SB ($4.75)
Hero (BB) ($25)
UTG ($31.30)
UTG+1 ($12.85)
MP1 ($23.30)
MP2 ($29.80)

Preflop: Hero is BB with A, K
1 fold, UTG+1 calls $0.25, 5 folds, Hero raises to $0.85, UTG+1 calls $0.60

Flop: ($1.80) K, J, 3 (2 players)
Hero bets $1.80, UTG+1 calls $1.80

Turn: ($5.40) 9 (2 players)
Hero bets $5.40, UTG+1 calls $5.40

River: ($16.20) 7 (2 players)
Hero bets $6.50, 1 fold

Total pot: $16.20 | Rake: $0.80

[martindcx1e]

1) Fine.
2) $5 river bet is weird. What's the point?
3) You don't have to pot the turn.

I was experimenting with blocking bets. Should I just check/fold hand 2 on the river or what? Check/call is more expensive since he'll bet 1/2 pot

what would he raise the flop and bet turn with that is behind what I have? he could POSSIBLY have a 9 or a weaker king, but am I really calling a large bet on the river?
of course, I could just be losing extra $5 every time I blocking bet like that...

[martindcx1e]

a blocking bet should be higher than that, like closer to 1/3 pot or something.

[cardsman1992]

Hand 1, you can only be scared of JJ/77--AA is possible but the least likely holding of the 3. I bet closer to pot and commit on flop and definitely on turn. These are the kinds of flops you look for when 3betting AK.

I agree that the blocking bet should be higher in hand 2.

I don't mind hand 3, you could bet a little less on turn but meh.