Folding top pair on the turn is a significant over-fold given our high equity against the button's wide betting range.
Flop Analysis
Checking is the preferred play here to balance our range and control the pot on a dynamic texture.
**Ranges:** The button's flatting range is condensed, containing many pocket pairs like 88-JJ and suited connectors that connect with the low cards on this board.
**Board:** While the Ace-high texture favors our opening range, the two diamonds make the board dynamic enough that we don't need to bet every top pair for protection.
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> **Takeaway:** Check-calling top pair on dynamic boards protects our checking range and keeps the pot manageable.
Turn Analysis
Folding here is a significant mistake as we are still a comfortable favorite against the button's overall betting range.
**Math:** We are getting 2.2:1 on a call, requiring roughly 31% equity to continue. With 61% equity against their range, folding is a massive loss of EV.
**Ranges:** While the Queen of diamonds completes flushes like Jack-Ten suited, the button still has many bluffs like King-Jack or Jack-Ten with a single diamond, and value we beat like Ace-Nine or pocket pairs.
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> **Takeaway:** Don't over-react to completing draws; top pair remains a strong bluff-catcher against wide positional ranges.
Note: Folding top pair here is a major over-fold; we have more than enough equity to call against the button's bluffs and weaker value.