risky free card?

[Newt_Buggs]

Party Poker No-Limit Hold'em Tourney, Big Blind is t30 (10 handed) converter

UTG (t1635)
UTG+1 (t760)
UTG+2 (t685)
MP1 (t1490)
MP2 (t715)
MP3 (t775)
Hero (t760)
Button (t725)
SB (t245)
BB (t210)

Preflop: Hero is CO with A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img].
UTG calls t30, <font color="#666666">5 folds</font>, <font color="#CC3333">Hero raises to t90</font>, <font color="#666666">2 folds</font>, BB calls t60, UTG calls t60.

Flop: (t285) 6[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, UTG checks, Hero checks.

Turn: (t285) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">UTG bets t120</font>, Hero calls t120, BB folds.

River: (t525) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets t100</font>, UTG calls t100.

Final Pot: t725

What do you think of the check on the flop and just calling on the turn? My reasoning behind checking was that there are no reasonable draws on this board, and it is likely my opponents need a runner runner to beat me.