Call this river with TPTK?

[STARSCREAM.]

<font color="purple"> Villian in this hand seemed very donkish, I didn't have a ton of reads on him at the time except for this one hand that I saw him play earlier.

His stats were 35/3/.5 so he was a huge calling station preflop and pretty much the same applied post flop as well.

Here is the hand he played earlier (He is the CO w/ AK in this hand).

Full Tilt Poker, $0.50/$1 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

MP: $107.40
CO: $49.10
BTN: $104.25
Hero (SB): $118.30
BB: $79
UTG: $159.70

Pre-Flop: K[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/heart.gif[/img] dealt to Hero (SB)
2 folds, <font color="red">CO raises to $4</font>, BTN calls $4, 2 folds

Flop: ($9.50) 3[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">CO bets $6.50</font>, BTN calls $6.50

Turn: ($22.50) A[img]/images/graemlins/diamond.gif[/img] (2 Players)
CO checks, BTN checks

River: ($22.50) 4[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">CO bets $21</font>, BTN calls $21

Results: $64.50 Pot ($3 Rake)
CO showed K[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] (a pair of Aces) and LOST (-$31.50 NET)
BTN showed J[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/spade.gif[/img] (a flush, Jack high) and WON $61.50 (+$30 NET)

Now onto the hand in question, I was running about 22/20/oo at the time</font>

Full Tilt Poker, $0.50/$1 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

BTN: $90.90
SB: $59.95
BB: $134.25
Hero (UTG): $117.80
MP: $77
CO: $173.10

Pre-Flop: A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/heart.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $5</font>, 3 folds, SB calls $4.50, BB folds

Flop: ($11) 3[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/spade.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $8</font>, SB calls $8

Turn: ($27) K[img]/images/graemlins/club.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $20</font>, SB calls $20

River: ($67) 8[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">SB bets $26.95 and is All-In</font>

This just seems like one of those spots where I can't fold, yet i'm never ahead when shoved into. The only thing that makes me want to call is because of his river pot sized lead in the previous hand where he hit TPTK on the turn, but making TPTK in that hand made sense, I don't know what to put him on that I beat, then again, I don't know what he has that i'm losing to either except a weird 2 pair.

Thoughts?