Current Residence: New York City, N.Y.
Club: Alliance Fencing Academy
Coach: Andrey Geva
Family: Parents John and Gina Vierheller
Current U.S. Ranking: No. 1 (Junior), No. 8 (Senior)
Current World Ranking: No. 28 (Junior)
Junior World Championship Teams: 2018, 2017 (Bronze - Team), 2016 (Bronze - Team)
Cadet World Championship Teams: 2014

Results

2018:

Gold - Bratislava Junior World Cup (Team)
Bronze - Dijon Junior World Cup (Team)
Fifth - January North American Cup (Division I)
Seventh - Junior World Championships (Team)
Seventh - Dijon Junior World Cup (Individual)
Seventh - January North American Cup (Junior)
18th - Junior World Championships (Individual)
42nd - Bratislava Junior World Cup (Individual)

2017:

Gold - November North American Cup (Junior)
Gold - July Challenge (Junior)
Gold - Junior Pan American Championships (Team)
Silver - July Challenge (Division I)
Silver - Espoo Junior World Cup (Individual)
Silver - January North American Cup (Junior)
Bronze - Junior World Championships (Team)
Bronze - January North American Cup (Division I)
Fifth - USA Fencing Junior Olympic Championships (Junior)
Sixth - Espoo Junior World Cup (Team)
Seventh - Junior World Championships (Individual)
Eighth - December North American Cup (Division I)
Ninth - Junior Pan American Championships (Individual)
21st - Burgos Junior World Cup
27th - Tallinn World Cup
37th - October North American Cup (Division I)

2016:

Bronze - Junior World Championships (Team)
Bronze - January North American Cup (Junior)
Bronze - July Challenge (Junior)
Fourth - Burgos Junior World Cup (Team)
Fifth - Laupheim Junior World Cup (Team)
Seventh - November North American Cup (Junior)
11th - Laupheim Junior World Cup (Individual)
15th - Dijon Junior World Cup
18th - December North American Cup (Division I)
21st - USA Fencing Junior Olympic Championships (Junior)
43rd - January North American Cup (Division I)
51st - Junior World Championships (Individual)

2015:

Gold - Espoo Junior World Cup
Bronze - USA Fencing Junior Olympic Championships (Junior)
Bronze - USA Fencing Junior Olympic Championships (Cadet)
Seventh - December North American Cup (Division I)
14th - Bratislava Cadet European Cup
16th - July Challenge (Division I)
24th - USA Fencing National Championships (Division I)
28th - July Challenge (Junior)
35th - November North American Cup (Junior)
36th - October North American Cup (Division I)
43rd - Burgos Junior World Cup

2014:

Gold - October North American Cup (Cadet)
Silver - USA Fencing Junior Olympic Championships (Cadet)
Silver - November North American Cup (Cadet)
Bronze - USA Fencing National Championships (Division IA)
Bronze - July North American Cup (Cadet)
Ninth - November North American Cup (Junior)
14th - Cadet World Championships
14th - July North American Cup (Junior)
14th - December North American Cup (Division I)
15th - Dijon Junior World Cup
17th - Goteborg Cadet European Cup
21st - USA Fencing Junior Olympic Championships (Junior)
22nd - July North American Cup (Division I)
23rd - Grenoble Cadet European Cup
27th - USA Fencing National Championships (Division I)
39th - January North American Cup (Division I)
41st - January North American Cup (Junior)
43rd - Goteborg Junior World Cup
55th - October North American Cup (Division I)
58th - Klagenfurt Cadet European Cup

2013:

Gold - Grenoble Cadet European Cup
Gold - January North American Cup (Cadet)
Gold - October North American Cup (Cadet)
Bronze - USA Fencing Junior Olympic Championships (Cadet)
Bronze - July North American Cup (Cadet)
Fifth - April North American Cup (Y14)
Ninth - November North American Cup (Junior)
11th - December North American Cup (Cadet)
12th - July North American Cup (Junior)
17th - January North American Cup (Y14)
18th - USA Fencing National Championships (Y14)
20th - January North American Cup (Junior)
24th - USA Fencing National Championships (Division IA)
29th - November North American Cup (Division I)
39th - April North American Cup (Division I)
40th - Klagenfurt Cadet European Cup
46th - Goteborg Cadet European Cup
54th - USA Fencing Junior Olympic Championships (Junior)

2012:

Bronze - USA Fencing National Championships (Y14)
Eighth - November North American Cup (Junior)
Ninth - October North American Cup (Cadet)
11th - April North American Cup (Y14)
13th - July North American Cup (Cadet)
13th - USA Fencing National Championships (Division IA)
15th - Klagenfurt Cadet European Cup
18th - USA Fencing Junior Olympic Championships (Cadet)
23rd - December North American Cup (Division I)
27th - USA Fencing Junior Olympic Championships (Junior)
31st - July North American Cup (Junior)
34th - November North American Cup (Division I)
35th - April North American Cup (Y14 Foil)
43rd - January North American Cup (Division I)
44th - January North American Cup (Junior)
51st - Grenoble Cadet European Cup
52nd - October North American Cup (Division I)

2011:

Gold - North American Cup E (Y12)
Gold - North American Cup F (Y12)
Eighth - North American Cup F (Y12 Foil)
10th - North American Cup E (Y14)
10th - November North American Cup (Y14)
13th - October North American Cup (Cadet)
19th - USA Fencing National Championships (Y14)
19th - North American Cup F (Cadet)
23rd - November North American Cup (Cadet)
41st - North American Cup E (Y14 Foil)

2010:

Bronze - North American Cup B (Y14)
Sixth - North American Cup F (Y12)
Sixth - North American Cup G (Y12)
35th - North American Cup G (Y12 Foil)
36th - North American Cup G (Y10 Foil)
55th - North American Cup F (Y12 Foil)

Ahn Aaron

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