In the final, Desai will take on Frenchman Tristan Flore, who had defeated Benjamin Brossier in an all-French semifinal 11-2 11-9 12-10 11-3.
After a long time, the U-21 final will be between two unseeded players who have come through qualifications to earn their respective places.
In fact, Desai's victory was even sweeter as he accounted for the Brazilian, who defeated compatriot Soumyajit Ghosh, the No. 5 seed, 11-8 11-8 5-11 11-9 11-4 in the quarterfinals.
Playing a fast paced game, Desai never gave any opportunity to his Brazilian rival and pushed him on the back foot. Not once did he relax during the semifinal encounter, making it utterly impossible for Hugo.
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Desai summed up his game nicely after the victory, saying, "I played faster than Soumyajit and continued with it throughout the match. My style of attacking game upset Hugo."
Having played Hugo once before at in a tournament at Sweden, where he had lost to him, Desai was determined to outwit his rival. He also said he had spoken to Soumyajit before the match and it helped him to an extent.
Desai had earlier won the U-21 men's singles event, his one and only ITTF World Tour title till date, in June 2012 in the Brazilian city of Santos.