In 2026, Mananchaya Sawangkaew won her first WTA 125 singles title in Mumbai and also reached the WTA 125 doubles final there (w/ Fossa Huergo). In 2025, she qualified for the main draw in Singapore and reached the quarterfinals (l. No. 1 seed Kalinskaya), made her first WTA 125 singles final in Mumbai, and played Grand Slam qualifying at the Australian Open and Roland Garros for the first time before a back injury ended her season early. She played collegiate tennis at Oklahoma State University.