Potentially Joanna's toughest fight since Gadelha.
Letourneau is underrated. Possibly the most underrated woman in the ufc. Good grappling, respectable stand up and is huge for the division (a former bantamweight). She is no "atomweight" like Penne. Valerie is a hard woman.
I expect Joanna to win but I see it going 5 rounds with Valerie perhaps giving her some "trouble" - especially if she can get Joanna down.