BB is playing 39/9 over 50 hands. No particular reads other than he seems weak tight on the flop. He thought for a while on the river before his bet.
$0.50/$1 No Limit Holdem
4 Players
Stacks:
CO (
$70.55)
Hero (BTN) ($92.50)
SB (
$59)
BB ($82.40)
Pre-Flop: (
$1.50, 4 players)
Hero is BTN J

Q
1 fold,
Hero raises to $3,
1 fold, BB calls $3
Flop: 9

10

4

(
$6.50, 2 players)
BB checks,
Hero bets $4.25, BB calls $4.25
Turn: 10

(
$15, 2 players)
BB checks, Hero checks
River: 9

(
$15, 2 players)
BB bets $8.50
Standard call given his range?