Quote Originally Posted by MadMojoMonkey View Post
Insta-call.

A straight is the only thing that has Hero beat here, and Hero has 7 outs on the turn and 10 outs on the river to fill up or catch quads. Even if Villain has JhTh, Hero has 35% equity to win. Keep in mind that Hero blocks that straight-flush redraw.

At the decision, there is $2.21 in the pot, and Hero has $1.72 to call. Hero needs at least 30% equity to make a profitable call. Hero has 35% equity against the worst-case scenario. Equity is greater than pot odds so call.
This is the stuff I can never work out, thanks for the reply.