KSW’s first event of 2022 if official, and a pair of title fights top the bill in Poland.

The 10-fight bill for Saturday’s KSW 66 was made official today in Szczecin, including lightweight champion Marian Ziolkowski (23-8-1), who seeks the second defense of his title when he takes on former welterweight champion Borys Mankowski (22-8-1) in the night’s main event.

Each man came in on the championship mark at 155 pounds.

Meanwhile, in the co-main event, light heavyweight champ Tomasz Narkun (18-4) takes on Russian challenger Ibragim Chuzhigaev (15-5). Each made weight without issue.

Three-time UFC veteran Niklas Backstrom (11-3) also returns to the cage at KSW 66 following a four-and-a-half year layoff to take on Sebastian Rajewski (11-6).

The full KSW 66 card streams live on KSWTV.com at 1 p.m. ET.

KSW 66 weigh-in results include:

• Champ Marian Ziolkowski (155) vs. Borys Mankowski (155) – for lightweight title
• Champ Tomasz Narkun (205) vs. Ibragim Chuzhigaev (204) – for light heavyweight title
• Michal Materla (186) vs. Jason Radcliffe (186)
• Krystian Kaszubowski (173) vs. Robert Maciejowski (183)
• Niklas Backstrom (156) vs. Sebastian Rajewski (156)
• Wojciech Janusz (215) vs. Damian Skarzynski (214)
• Donovan Desmae (155) vs. Lukasz Rajewski (156)
• Francesco Moricca (160) vs. Gracjan Szadzinski (161)
• Kacper Koziorzebski (171) vs. Hubert Szymajda (170)
• David Martinik (135) vs. Patryk Surdyn (136)