Meet Our Coaches
Learn from the best in the sport
Sergei Golubitsky
Head Coach
Sergei Golubitsky is the Head Coach of GFC — a 4x World Champion and Olympic Silver Medalist, widely regarded as one of the greatest foil fencers of all time. He is a member of the FIE Hall of Fame and formerly coached the USA, Germany, and Netherlands national teams.
Marwan Ibrahim
Associate Head Coach
Marwan Ibrahim is the Associate Head Coach of GFC, with 8 years of experience coaching the Egypt National Team. As an athlete he was a 2x African Champion and placed 11th at the World Championships.
Ricardo Hernandez
Assistant Coach
Ricardo Hernandez is an Assistant Coach at GFC, formerly coaching the Mexico Junior National Team (2018–2025).
Katherine Kim
Student Coach
Katherine Kim is a Student Coach at GFC and NCAA Captain of the Foil Team at UC San Diego. She is a current US National Team member, a Junior World Cup team gold medalist, and a 2x NCAA All-American.
Alexis Chew
Student Coach
Alexis Chew is a Student Coach at GFC. A 2025 University of California, San Diego graduate, she earned First Team All-MPSF honors, was a Junior Olympics team champion, and is a USFCA Scholar of Distinction.
Tiger Joo
Conditioning & Strength Coach
Tiger Joo is GFC's Conditioning & Strength Coach, for NCAA Division I & II athletes.
Pablo Giraldo
Assistant Coach
Pablo Giraldo is an Assistant Coach at GFC. A Penn State NCAA Division I foil fencer, he is a Summer Nationals bronze medalist and a member of the USA Cadet Travel Team.
Lorenzo Gonzalez
Assistant Coach
Lorenzo Gonzalez is an Assistant Coach at GFC. He was a member of the German Junior National Team, trained at the Bonn Olympic Boarding School, and brings 21 years of fencing experience with 7+ years of professional coaching.
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