Kathleen Dubberstein

In this Philippine name, the middle name or maternal family name is Sumbilloand the surname or paternal family name is Dubberstein.

Kathleen Dubberstein
Curler
Other names	Katie Dubberstein
Born	Kathleen Sumbillo Dubberstein (1994-05-08) May 8, 1994 (age 31) British Hong Kong
Team
Skip	Kathleen Dubberstein
Third	Leilani Dubberstein
Second	Jessica Byers
Lead	Lindsey Schmalz
Mixed doubles partner	Marc Pfister
Curling career
Member Association	United States (2013–2024)   Philippines (2024–present)
Other appearances	Asian Winter Games: 1 (2025)

Kathleen Sumbillo Dubberstein (born May 8, 1994 ^[1] ) is a Filipino-American curler from Wisconsin. A 2014 United States Junior silver medalist, Dubberstein represents the Philippines internationally since 2024.

Curling career

Women's

United States

Dubberstein competed at the United States Women's Curling Championship from 2013 to 2019. She also competed at the United States Junior Curling Championships with her team winning a silver in 2014. ^{[2] [3]}

Philippines

Dubberstein competed for the Philippines at the 2024 Pan Continental Curling Championships Division B tournament. Her team finished fourth losing to Kazakhstan in the Division B bronze medal game. ^[4] Dubberstein would also skip the Philippines in the women's tournament at the 2025 Asian Winter Games, where the team would finish the round robin with a 4–4 record, just finishing outside the playoffs in 5th place.

Her team would return to represent the Philippines the following year at the 2025 Pan Continental Curling Championships Division B tournament, where they would win the event, this time beating Kazakhstan's Angelina Ebauyer 11–2 in the gold medal game.

Mixed doubles

Dubberstein partnered with Marc Pfister for the 2025 Asian Winter Games curling mixed doubles event. They opened their campaign with an upset against the South Korean team, ^[5] and finished in fourth place with a 5–3 record, losing to China 6–5 in the bronze medal game. ^[6]

Personal life

Kathleen is the daughter of Eva and Steve Dubberstein. She has two sisters, Lani and Annmarie, who are also curlers. ^[7] She was born in British Hong Kong but considers Portage, Wisconsin as her hometown. She is an alumna of Madison College. ^{[2] [8]}

Teams

Women's

Season	Skip	Third	Second	Lead	Alternate	Coach	Events
2012–13	Sarah Anderson	Kathleen Dubberstein	Taylor Anderson	Leilani Dubberstein	Abigail Suslavich	Tyler George	2013 USJCC (4th) [9] [10]
	Sarah Anderson	Courtney Slata	Kathleen Dubberstein	Taylor Anderson			2013 USWCC (9th) [11]
2013–14	Sarah Anderson	Kathleen Dubberstein	Taylor Anderson	Leilani Dubberstein		Wayne Anderson	2014 USJCC [12]
2024–25	Kathleen Dubberstein	Leilani Dubberstein	Jennifer de la Fuente	Sheila Mariano	Anne Marie Bonache		2024 PCCC B-Division (4th) 2025 AWG (5th)
2025–26	Kathleen Dubberstein	Leilani Dubberstein	Jessica Byers	Lindsey Schmalz			2025 PCCC B-Division

Mixed doubles

Season	Female	Male	Events
2024–25	Kathleen Dubberstein	Marc Pfister	2025 AWG (4th)
2025–26	Kathleen Dubberstein	Pedro Malvar	2026 World Mixed Doubles QE (TBD)

References

1. "DUBBERSTEIN Kathleen Sumbillo". Web Results System for the 9th Harbin Asian Winter Games 2025. Organising Committee for the 9th Harbin Asian Winter Games 2025. Retrieved February 7, 2025.
2. "Katie Dubberstein - Curler". Team USA. United States Olympic & Paralympic Committee. February 1, 2024. Retrieved February 7, 2025.
3. De George, Matt (March 11, 2013). "Anderson twins prove they have ice in their veins, curling in their hearts". Delco Times. Retrieved February 7, 2025.
4. "Dubberstein Finishes Fourth at Pan-Continental Championships -- B-Division". CurlingZone. Retrieved February 7, 2025.
5. Villar, Joey (February 4, 2025). "Pfister, Dubberstein stun Korean foes in curling to open Asian Winter Games bid". The Philippine Star. Retrieved February 7, 2025.
6. "Asian Winter Games: Curling Pilipinas falls short vs China to finish fourth in mixed doubles". GMA News. February 8, 2025. Retrieved February 8, 2025.
7. "Annmarie Dubberstein". Team USA. United States Olympic & Paralympic Committee. February 1, 2024. Retrieved February 7, 2025.
8. "Kathleen Dubberstein". CurlingZone. Retrieved February 7, 2025.
9. "Junior Nationals – Teams". Broomstones Curling Club. Archived from the original on August 10, 2014. Retrieved May 26, 2020.
10. "USA Junior Womens Championship – Playoffs". CurlingZone. Retrieved May 26, 2020.
11. "Teams & Draw". 2013 USA Curling National Championships. Archived from the original on February 16, 2013. Retrieved May 26, 2020.
12. "2014 USA Junior Women's Championship – Women's teams". CurlingZone. Retrieved May 26, 2020.