100NL6, idiot end of straight in button-SB-BB battle

[HSB]

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($249.75)
Button ($39.50)
Hero ($250.25)
BB ($101.50)
UTG ($258.70)
MP ($95.10)

Preflop: Hero is SB with 7, 6.
[color=#666666]3 folds</font>, [color=#CC3333]Button raises to $3</font>, Hero calls $2.50, BB calls $2.

Flop: ($9) T, 9, 9 [color=#0000FF](3 players)</font>
Hero checks, BB checks, Button checks.

Turn: ($9) 8 [color=#0000FF](3 players)</font>
[color=#CC3333]Hero bets $8</font>, [color=#CC3333]BB raises to $27</font>, Button folds, Hero calls $19.

River: ($63) Q [color=#0000FF](2 players)</font>
Hero checks, [color=#CC3333]BB bets $71.5 (All-In)</font>,

I question the turn call and the river.