 After spliting up and each focus on their own career in late 2016, Setiawan and Ahsan briefly together again as a pair and success resurgence as one of the most dominant pair in 2019 badminton season.That year maybe their best season as a couple, where they unpredictable entered 11 finals and succeeded became the first men's doubles player that able to won 3 mayor tittles in a year.They won All England Open 2019 in three sets over Malaysian pair 11–21, 21–14, 21–12, then captured their third World Champions as a pair after winning 2019 BWF World Championships defeated Japanese duo Takuro Hoki and Yugo Kobayashi 21–17, 21–14, and beaten strong Japanese pair Hiroyuki Endo and Yuta Watanabe in straight sets 24–22, 21–19 to won World Tour Finals 2019.