SB is loose/passive pre and post flop. BB sat a few orbits ago and seems tagg. My image is tagg.

Bodog 6max BB is $.5

Hero is UTG ($65.80)
MP ($44.25)
CO ($42.50)
BTN ($50.50)
SB ($69.50)
BB ($73.30)

Preflop: Dealt to Hero
Hero raises to $1.75, 3 folds, SB calls $1.50, BB calls $1.25

Flop ($5.25):
SB bets $5.25, BB raises to $10.50, Hero??

SB has played very passive post flop and won't donk lead like this with anything worse than A9 and maybe 87dd or JTdd but he usually check/calls with draws even if they are big. His range likely includes lots of 2 pair and straights. BB's minraise kinda threw me off because its such a draw heavy board but I can see him raising with a big draw or any of the obvious 2 pair+ hands.