Ketlen Vieira vs Macy Chiasson

The women's bantamweight division is set for a pivotal clash as Ketlen Vieira faces off against Macy Chiasson. Both fighters are eager to make a statement and climb the rankings, promising a high-stakes battle that could reshape the title landscape.

Core Stats Comparison

*** This analysis does not include stats from DWCS/TUF/Road to UFC

Striking Breakdown:

Macy Chiasson has the striking edge in nearly every category. She boasts a 46% striking accuracy compared to Ketlen Vieira’s 41%, and she lands more volume—3.77 significant strikes per minute to Vieira’s 2.92. Even more impressively, Chiasson absorbs only 2.79 strikes per minute, while Vieira absorbs a concerning 3.9.

That gives Chiasson a clear positive striking differential, while Vieira actually holds a negative differential, which is something to watch if the fight stays on the feet. However, Chiasson's 44% striking defense is notably weaker than Vieira’s 51%, so she’s not immune to counters.

Grappling Breakdown:

On the ground, Vieira flips the script. She has the edge in takedown accuracy (45%) and a dominant takedown defense rate of 89%, compared to Chiasson’s 70%.

Chiasson, however, averages more takedowns per fight—2.37 takedowns per 15 minutes versus Vieira’s 1.38.

That said, Vieira's ability to stuff takedowns may limit Chiasson's opportunities. When it comes to submissions, both women have low activity, but Vieira holds a slight edge with a 0.57 submission average compared to Chiasson’s 0.42.

Summary:

This clash of top bantamweights is a true striker vs grappler showdown. Chiasson has the clear edge on the feet, with superior volume and efficiency, but her defensive lapses leave openings. On the other hand, Vieira brings elite grappling defense and toughness—evidenced by her gritty performance against Kayla Harrison in her last bout.

If Chiasson can keep it standing, she has the tools to outpoint Vieira.