Learner Tien, a 20-year-old left-handed player, made a remarkable comeback at the Delray Beach Open, defeating defending champion Miomir Kecmanovic in a three-set thriller with scores of 6-4, 6-7(4), 7-6(5). Tien was two points away from defeat when Kecmanovic served for the match at 5-4 in the final set but rallied through strong defense and resilience, claiming victory and advancing to the quarterfinals. Tien, who recently reached the Australian Open quarter-finals, highlighted his belief and fighting spirit, saying, 'I just kept believing.' He acknowledged some luck but emphasized the importance of persistence and effort in close matches. Tien will face fellow American Frances Tiafoe, who recently defeated Zachary Svajda in a tough three-set match, in the upcoming quarterfinal. Tiafoe, who considers himself an underdog and values every match over crowd size, expressed admiration for Tien's impressive run and readiness for a challenging encounter. Top seed Taylor Fritz also advanced, defeating Rafael Jorda, and will next face Tommy Paul. The tournament continues to showcase rising stars and seasoned players competing fiercely in Delray Beach.