Gerbig began his academy career playing for Inter Taipei F.C. while simultaneously playing and studying at Taipei American School.
In April 2015, Gerbig began playing for Royal Blues in Taipei at the age of 16. In his debut match, a league match against Taichung City on 1 November 2015, he was substituted in at 41 minutes, and 4 minutes later, he scored his first goal with a long shot.[2] This goal contributed to Royal Blues winning the game 3–1.
In April 2018, Gerbig joined the Taipei Red Lions,[3] but he suffered a knee injury during this time. Not only did he leave the team after only three months of playing for the Taipei Red Lions, but he also missed the 2018 Asian Games.
On 29 February 2020, Gerbig announced his transfer to the University of Virginia on the social media, where he would represent Virginia Cavaliers Men's Soccer. University of Virginia is a top school for the NCAA Men's Soccer Division I program in the United States. The team has qualified for the NCAA Division I Men's Soccer Tournament over 40 times and won 7 championships. It also finished as runner-up in 2019.
Professional career
Kitchee
On 24 July 2022, Kitchee announced an agreement for Gerbig to join in the 2022–23 season.[8] Gerbig made his professional debut in the AFC Champions League Round of 16 match against BG Pathum United on 19 August 2022.
Gerbig established himself as a first-choice centre back during the 2022–23 season by starting all 18 league matches. He also score twice in a group stage match in the Sapling Cup against Resources Capital on 1 February 2023.
Henan
After impressive performances during the 2023 AFC Asian Cup group stage matches, Gerbig attracted interest from Chinese clubs. On 29 February 2024, Gerbig joined Chinese Super League club Henan for a transfer fee of RMB $1 million.[9]
Gerbig represented Hong Kong U-20 in the 13th National Games of the People’s Republic of China in 2017.[11][12][13] In the 2018 Asian Games the following year, although Gerbig was once again selected for the 40-man roster of Hong Kong U-23, he had to sit out on the Asian Games due to injury.[14]
In March 2019, Gerbig was called up again in the 2020 AFC U23 Championship qualifiers and played for the first time against North Korea U-23, where Hong Kong U-23 lost by two goals in the final match.[15]