LONDON –  Jennifer Maia is excited to see fresh blood at the top of the UFC women’s flyweight division after Alexa Grasso’s title upset of Valentina Shevchenko earlier this month. That said, former title challenger Maia (20-9-1 MMA, 5-5 UFC) doesn’t think the new champion represents the top fighter in the weight class as she enters a key bout with Casey O’Neill (9-0 MMA, 4-0 UFC) on Saturday at UFC 286 . The event takes place at The O2 in London with a main card that airs on pay-per-view following prelims on ESPNews and ESPN+.