Daniel Elahi Galan defeated Jason Kubler 2–6, 6–3, 7–6, 4–6, 7–6 in the first round of the Australian Open on hard court on 14 January 2024, upsetting the pre-match favourite Kubler. The Colombian recovered from a poor opening set to level the match, then edged two tiebreaks in the third and fifth sets to secure a five-set victory. Galan's comeback performance marks a significant upset and demonstrates his resilience in a demanding opening-round encounter.