Tyron Woodley reacts to defeating Demian Maia in the welterweight...

Tyron Woodley reacts to defeating Demian Maia in the welterweight title bout during UFC 214 at Honda Center on July 29, 2017 in Anaheim. Credit: Getty Images/Sean M. Haffey

UFC flyweight champion Nicco Montano was taken to a medical facility "as a precautionary measure" on Friday morning before weigh-ins because of health concerns, the UFC said Friday.

Her scheduled title defense against Valentina Shevchenko on Saturday at UFC 228 at American Airlines Center in Dallas has been canceled. (Shevchenko was on weight for a championship fight at 124.5 pounds.)

Here's the latest UFC 228 fight card.

UFC 228 main card, 10 p.m. ET on PPV

Middleweight title: Champion Tyron Woodley (170) vs. Darren Till (169)

Jessica Andrade (116) vs. Karolina Kowalkiewicz (115)

Brandon Davis (146) vs. Zabit Magomedsharipov (146)

Jimmie Rivera (136) vs. John Dodson (135.5)

Abdul Razak Alhassan (170.5) vs. Niko Price (170.5)

UFC 228 prelims, 8 p.m. on FX

Carla Esparza (115.5) vs. Tatiana Suarez (115)

Aljamain Sterling (135.5) vs. Cody Stamann (135.5)

Geoff Neal (170.5) vs. Frank Camacho (171)

Charles Byrd (185) vs. Darren Stewart (185.5)

UFC 228 early prelims, 6:15 p.m. on Fight Pass

Diego Sanchez (171) vs. Craig White (171)

Jim Miller (155.5) vs. Alex White (155)

Irene Aldana (135) vs. Lucie Pudilova (134)

Jarred Brooks (125.5) vs. Roberto Sanchez (126)

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