Kateřina Mrázková

Kateřina Mrázková (born August 25, 2006) is a Czech ice dancer. With her brother and skating partner, Daniel Mrázek, she is the 2023 World Junior champion, the 2022–23 Junior Grand Prix Final bronze medalist, a two-time ISU Junior Grand Prix gold medalist, and the 2023 Czech junior national champion. She holds the junior world record for the rhythm dance and combined total.

Personal life
Mrázková was born on August 25, 2006, in Vrchlabí, Czech Republic.

Early years
Mrázková/Mrázek made their competitive debut internationally at the Egna Dance Trophy at the end of the 2020–21 season, finishing in ninth place. The following season saw them make their ISU Junior Grand Prix debut, finishing fourth at the first French JGP in Courchevel and the 2022 JGP Slovakia in Košice. Silver medalists at the Ice Challenge in the junior category, and then taking gold at the Pavel Roman Memorial were only the silver medalists at the Czech Junior Championships. As a result, they were not assigned to compete at the 2022 World Junior Championships but went on to win the gold medal at the Egna Trophy in their second appearance there.

2022–23 season: Junior World champions
Mrázková/Mrázek opened their season at the 2022 JGP Czech Republic on home soil in Ostrava. In the rhythm dance, they set a new junior world record, breaking a three-year-old record set by 2019 World Junior champions Lajoie/Lagha. They went on to win the gold medal, the first ever for a Czech junior dance team. Mrázek observed that "in 2018, I was here in the same Junior Grand Prix as a single skater, and I finished, like, fifteenth. Today I'm here with my sister, my partner. We achieved something we didn't believe in four years." The 2022 JGP Italy, their second assignment, was held at their training base in Egna. Mrázková/Mrázek improved upon their previous junior world record in the rhythm dance by over a point and led the segment going into the free dance. The siblings maintained their lead in the free to take the title by a nearly 15-point margin over silver medalists Lim/Quan of South Korea. Due to their placements across their two JGP assignments, Mrázková/Mrázek qualified to the 2022–23 Junior Grand Prix Final as the top-seeded junior dance team. They are the first Czech team to qualify for the Final since Kadlčáková/Bílek in 2000.

Mrázková/Mrázek entered the Junior Grand Prix Final in Torino as the favourites for the gold medal but placed fourth in the rhythm dance after both fell at the end of their Argentine tango pattern dance segment. The siblings opened their free dance with another double-fall on their rotational lift. Despite this, they still placed third in that segment and rose to third overall, 0.99 points behind silver medalists Lim/Quan. She remarked on winning the bronze medal, "we were not so happy because we made some mistakes." Assessing the situation afterward, they attributed the initial fall in the rhythm dance to Mrázek tripping on Mrázková's calf-length skirt, a costuming choice they had made at the start of the season specifically to acquire a different look than the typical dance program. The siblings also said they were nervous in the face of the best possible junior competition, some of whom, such as the eventual gold medalist Canadian team Bashynska/Beaumont, they had never met before.

Shortly after their disappointment in Torino, Mrázková/Mrázek appeared at the 2023 Four National Championships, finishing first overall among junior ice dance teams and winning the Czech junior national title. In the new year, they won gold at the Egna Dance Trophy in February.

At the 2023 World Junior Championships in Calgary, Mrázková/Mrázek placed first in the rhythm dance, 0.11 points clear of Lim/Quan in second place, while expected rivals Bashynska/Beaumont finished fourth in the segment due to errors on the pattern. The siblings' lone error was her missing a twizzle level. They went on to win the free skate as well by a wider margin over the South Koreans, becoming the first Czech dance team to win the Junior World title. He said they were "incredibly happy" at the outcome after the problems in Torino, also indicating that they planned to compete at the senior level the following season.

2023–24 season
For their senior debut free dance, the duo selected Tchaikovsky's Swan Lake, which Mrázek called "a big challenge for us," explaining "our goal is for the audience to feel like they are in the National Theatre." Mrázková/Mrázek made their senior debut on the Challenger circuit, coming fifth at both the 2023 CS Lombardia Trophy and 2023 CS Nebelhorn Trophy. In what was a historic moment for the Czech Republic, Mrázková/Mrázek joined fellow Czech sibling team Taschlerová/Taschler on the Grand Prix, the first time two Czech teams competed on the circuit in the same year. They both started at the 2023 Skate America, which Taschlerová called "nice" as "we are great friends all together." Mrázková/Mrázek finished eighth at the event, which he said "wasn't our best, but not our worst performance either. Last season I was always a super-perfectionist and I wanted to give a flawless performance, which led to some mistakes. I think we have improved a little in this sense." At the 2023 Grand Prix of Espoo, the siblings placed sixth in the rhythm dance, but dropped to seventh place after Mrázková stumbled on the one-foot step sequence.

With Taschlerová/Taschler absent from the 2024 Four Nationals Championships due to the latter's injury, Mrázková/Mrázek won their first senior Czech national title by a wide margin, and finished 24 points ahead of the second-place finishers at the Four Nationals. They went on to make their European Championship debut at the 2024 edition in Kaunas, where they finished ninth in the rhythm dance. They were eleventh in the free dance after a step error by Mrázek, but remained ninth overall. With their fellow sibling team returning to competition at the event and placing seventh, it was the first time since 1980 that two Czech dance teams placed in the top ten.

Mrázková/Mrázek were assigned to make their World Championship debut at the 2024 edition in Montreal. They placed thirteenth in the rhythm dance, while Taschlerová/Taschler, who had placed in the top ten the previous year, were eighteenth in the segment after a lift error. Mrázková/Mrázek were eleventh in the free dance with another improved personal best, but remained thirteenth overall, while their fellow Czechs moved up to fifteenth.

Junior world record scores
Mrázková/Mrázek are the current junior world record holders for the rhythm dance and total scores.

Achievements
With Mrázek for Czech Republic:
 * First Czech ice dance team to win a Junior World Championships.
 * Second Czech junior ice dance team to qualify for a Junior Grand Prix Final, behind Lucie Kadlčáková / Hynek Bílek.
 * First Czech ice dance team to win a Junior Grand Prix event.

Competitive highlights
GP: Grand Prix CS: Challenger Series JGP: Junior Grand Prix

Detailed results
Small medals for short and free programs awarded only at ISU Championships.