BB is running 19/16 over 200 hands and has called an open in the BB 1/15 times.

I am not beating much. Since I made this bed do I pretty much have to lay in it?

[converted_hand][hand_history]Merge, $10 Buy-in (100/200 blinds) No Limit Hold'em Tournament, 9 Players
Poker Tools Powered By Holdem Manager – The Ultimate Poker Software Suite. View Hand #14666641

CO: 4,075 (20.4 bb)
BTN: 5,150 (25.8 bb)
SB: 6,214 (31.1 bb)
BB: 6,156 (30.8 bb)
UTG+1: 1,890 (9.5 bb)
UTG+2: 7,563 (37.8 bb)
MP1: 4,800 (24 bb)
MP2: 5,692 (28.5 bb)
Hero (MP3): 11,323 (56.6 bb)

Preflop: Hero is MP3 with K K
4 folds, [color=”red”]Hero raises to 400[/color], [color=”grey”]CO folds[/color], BTN calls 400, [color=”grey”]SB folds[/color], BB calls 200

Flop: (1,300) J T 7[color=”blue”] (3 players)[/color]
BB checks, [color=”red”]Hero bets 650[/color], [color=”grey”]BTN folds[/color], BB calls 650

Turn: (2,600) A[color=”blue”] (2 players)[/color]
BB checks, Hero checks

River: (2,600) 9[color=”blue”] (2 players)[/color]
[color=”red”]BB bets 1,425[/color], Hero ?