KTo in the BB - check-raised on the river

[ccwhoelse?]

first hand at a new table

Party Poker 0.5/1 Hold'em (9 handed) converter

Preflop: Hero is BB with K[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img].
UTG calls, UTG+1 folds, MP1 folds, MP2 calls, MP3 folds, CO folds, Button folds, SB completes, Hero checks.

Flop: (4 SB) 5[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="blue">(4 players)</font>
SB checks, <font color="CC3333">Hero bets</font>, UTG calls, MP2 folds, SB calls.

Turn: (3.50 BB) 9[img]/images/graemlins/diamond.gif[/img] <font color="blue">(3 players)</font>
SB checks, <font color="CC3333">Hero bets</font>, UTG calls, SB calls.

River: (6.50 BB) K[img]/images/graemlins/spade.gif[/img] <font color="blue">(3 players)</font>
SB checks, <font color="CC3333">Hero bets</font>, UTG folds, <font color="CC3333">SB raises</font>, Hero calls.

Final Pot: 10.50 BB
<font color="green">Main Pot: 10.50 BB, between SB and Hero.</font>

should I check on this river.
should i be calling the raise?