2/5 game, hero sits with $1200 in the SB; to the right on the button is a very strong TAG reg.
UTG straddled to 10, fish in UTG +1 raises to $40, 2 callers, then BTN 3-bets to $240. Hero looks down at A3s.
Certainly a mostly fold hand, however we have several things pointing towards a potential jam:
(1) Opener's range is wide.
(2) $80 dead money from 2 callers <----- not significant in relation to a $1200 jam, but
(3) Point 2 makes BTN's 3-betting range wider than usual.
(4) We block AA.
(5) Stacks sizes are just right - big enough for decent FE without being absurdly expensive.
(6) We're suited and have wheel potential - if called we probably have as much equity as we possibly can have.