Katarina Wolfkostin

Wolfkostin began skating in 2009, when she was five.[2] She started ice dancing when she was nine. Wolfkostin and her first partner, John Carlson, placed eighth in the intermediate division at the 2016 U.S. Championships.[3][4] She teamed up with Howard Zhao in the 2016–17 season. Together, they were the 2017 U.S. national intermediate and 2018 U.S. national novice ice dance champions.[5] Wolfkostin/Zhao placed fourth in the advanced novice division at the 2018 Mentor Toruń Cup.[6]

Wolfkostin/Zhao placed tenth at their first-ever Junior Grand Prix event, 2018 JGP Czech Republic. They won the bronze medal at the 2018–19 Pacific Coast Sectionals to advance to the 2019 U.S. Championships, where they finished ninth. Wolfkostin/Zhao split following the end of the season.

Wolfkostin began skating with Jeffrey Chen in 2019 and he moved to train with her coaches, Igor Shpilband and Pasquale Camerlengo, in Novi, Michigan.[1] They placed fifth in their international debut at 2019 JGP France. Wolfkostin/Chen improved to fourth at 2019 JGP Russia, after placing second in the free dance. They won the inaugural U.S. Ice Dance Final to qualify for the 2020 U.S. Championships.[1] Wolfkostin/Chen won their first international medal at the 2019 Golden Spin of Zagreb, earning the silver medal behind Arina Ushakova / Maxim Nekrasov of Russia.

Wolfkostin/Chen were named as the sole ice dance entrant on the U.S. team for the 2020 Winter Youth Olympics.[7] They were fifth after the rhythm dance, before placing third in the free dance, to win the bronze medal overall behind Russians Irina Khavronina / Dario Cirisano and Sofia Tyutyunina / Alexander Shustitsky.[8] Their medal was the first won by Team USA at the 2020 Winter Youth Olympics.[9][10] Wolfkostin/Chen were drawn as part of Team Determination for the team event, alongside singles skaters Cha Young-hyun of South Korea and Nella Pelkonen of Finland and pairs skaters Brooke McIntosh / Brandon Toste of Canada. They placed fourth in the free dance segment to help Team Determination finish fourth, after losing the tie-breaker.

Wolfkostin/Chen placed fourth in the rhythm dance and second in the free dance to win the silver medal at the 2020 U.S. Championships, behind Avonley Nguyen / Vadym Kolesnik.[11] Assigned to compete at their first World Junior Championships, they placed seventh.[12]