Isolating a "fit or fold" player

[Moneyline]

MP is a little too loose preflop. Postflop he's a fit or fold type player who will bet into a preflop raiser if he flops something; he'll sometimes check/call but NEVER check/raises.

The blinds are somewhere between tight and moderately tight.


Preflop: Folded to MP who calls, folded to me on button, I raise with any 2.

Flop: I bet regardless of the flop if it's checked to me.

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