Two heavyweight fights scheduled for UFC 310 have been impacted by withdrawals.

With Tallison Teixeira off the Dec. 10 card at T-Mobile Arena in Las Vegas due to injury, Kennedy Nzechukwu has stepped into the lineup opposite Lukasz Brzeski. Additionally, after Martin Buday pulled out due to injury, his bout vs. Rizvan Kuniev was canceled altogether.

The promotion made both changes official Wednesday. Polish outlet InTheCage.pl first reported the Nzechukwu-Brzeski bout.

Nzechukwu (13-5 MMA, 7-5 UFC) made his promotional heavyweight debut in October when he finished Chris Barnett with strikes in Round 1. The win snapped a two-fight losing skid.

Brzeski (9-5-1 MMA, 1-4 UFC) aims to turn things around after a knockout loss to Mick Parkin in March. The defeat came after his first career UFC win, a unanimous decision over Valter Walker.

With the changes, the UFC 310 lineup includes:

• Alexandre Pantoja vs. Kai Asakura – for flyweight title

• Ian Machado Garry vs. Shavkat Rakhmonov

• Ciryl Gane vs. Alexander Volkov

• Kron Gracie vs. Bryce Mitchell

• Movsar Evloev vs. Aljamain Sterling

• Dominick Reyes vs. Anthony Smith

• Clay Guida vs. Chase Hooper

• Eryk Anders vs. Chris Weidman

• Michael Chiesa vs. Max Griffin

• Themba Gorimbo vs. Vicente Luque

• Cody Durden vs. Joshua Van

• Martin Buday vs. Rizvan Kuniev

• Bryan Battle vs. Randy Brown

• Lukasz Brzeski vs. Kennedy Nzechukwu

• Doo Ho Choi vs. Nate Landwehr

For more on the card, visit MMA Junkie’s event hub for UFC 310.

This article originally appeared on MMA Junkie: Two heavyweights withdraw from UFC 310; one fight backfilled