Marian Ziolkowski will unify the Konfrontacja Sztuk Walki lightweight championship when he defends his piece of the crown against interim titleholder Salahdine Parnasse in the KSW 83 co-headliner on Saturday at PGE Narodowy in Warsaw, Poland. Room only exists for one atop the promotion’s 155-pound mountain.

Ziolkowski enters the cage on the strength of a four-fight winning streak. The WCA Fight Team product last competed on June 18, when he outpointed Sebastian Rajewski to a five-round unanimous decision in their KSW 71 pairing. Parnasse, meanwhile, has also rattled off four straight victories. The Atch Academy export last fought at KSW 76, where he submitted the aforementioned Rajewski with a rear-naked choke in the fourth round of their Nov. 12 encounter.

As Ziolkowski and Parnasse make final preparations for their forthcoming battle at 155 pounds, a look at some of the numbers that have accompanied them to this point:

32: Years of age for Ziolkowski, who was born in Warsaw, Poland, on July 17, 1990.

13: Ziolkowski wins by submission, accounting for 52% of his career total (25). His methods of choice: six rear-naked chokes, four triangle chokes, two armbars and one arm-triangle choke. Ziolkowski holds six other wins by knockout or technical knockout (24%) and six more by decision (24%).

60: Rounds completed by Ziolkowski as a professional mixed martial artist. He has gone the distance on 11 different occasions and carries a 6-4-1 record in those bouts.

12: Consecutive calendar years in which Ziolkowski has fought at least once. He went 0-1-1 in 2011, 4-0 with one no contest in 2012, 3-1 in 2013, 2-1 in 2014, 4-0 in 2015, 2-2 in 2016, 3-0 in 2017, 2-2 in 2018, 1-0 in 2019, 1-1 in 2020, 1-0 in 2021 and 2-0 in 2022.

78: Combined victories between the six opponents—Rajewski, Borys Mankowski, Maciej Kazieczko, Roman Szymanski, Gracjan Szadzinski and Grzegorz Szulakowski—Ziolkowski has beaten as a member of the KSW roster. They sport a cumulative .671 winning percentage at 78-38-1.

25: Years of age for Parnasse, who was born on Dec. 4, 1997 in Aubervilliers, France.

7: Parnasse victories by submission, accounting for 41% of his career total (17). His methods of choice: five rear-naked chokes, one arm-triangle choke and one anaconda choke. Parnasse owns two other victories by knockout or technical knockout (12%) and eight more by decision (47%).

96: Seconds needed for Parnasse to dismiss Helder Fernandes with a rear-naked choke at a 100% Fight show on Oct. 31, 2015. More than seven years later, it remains his fastest finish to date.

4: Promotions in which Parnasse has plied his MMA trade. In addition to his 9-1 mark in KSW, he has gone 6-0 in 100% Fight, 1-0 in European Beatdown and 1-0 in the Kung Fu World Cup.

.707: Cumulative winning percentage between the nine opponents—Rajewski, Szymanski, Daniel Rutkowski, Daniel Torres, Filip Pejic, Ivan Buchinger, Marcin Wrzosek, Artur Sowinski and Lukasz Rajewski—Parnasse has defeated since he linked arms with KSW. They boast a combined record of 163-67-2.