Yuki squandered a set advantage to lose 6-1 6-7(3) 3-6 in his second qualifying match of the 2015 season opening ATP tour event.
Yuki stated off well and looked favourite to pocket the match in straight sets but Prasanth fought gallantly in the second and third sets to stun his fancied rival.
It was a bad beginning to the season for Yuki, ranked 249 on the ATP circuit. It looked he was not able to bear the hot and humid conditions this afternoon against local boy Prasanth, ranked outside 500.
Results of second round qualifying matches: D Dzumhur (BIH) beat M Venus (NZL) 6-2 6-4, K Kaza (IND) beat A Kudryavtsev (RUS) 6-4 6-7(5) 7-6(4), E Donskoy (RUS) beat E Gerasimov (BLR) 6-2 1-6 7-5, I Marchenko (UKR) beat V Vardhan (IND) 7-5 6-4, A Bedene (SLO) beat J Nedunchezhiyan (IND) 6-4 6-4, L Vanni (ITA) beat T Fabbiano (ITA) 6-4 6-2, S Mukund (IND) beat P Torebko (GER) 6-4 1-6 6-2, N Prashanth (IND) beat Y Bhambri (IND) 1-6 7-6(3) 6-3.