Prajnesh made the finals in 2019 and SF in 2018, the last 2 times the Challengers were played here. Yuki (winner), Ramk(Rup), and Saketh (SF) were 3 of the 4 SFs in 2017. So, these are likely relatively quick courts which the Indians used to thrive on in the past.I am wondering if it is really age or something else. His running is good, his stroking from the baseline is superb, volleys, serve, overhead are all top class. But he is making tactical errors at key points. I feel like he is either not getting the right advice from his coach (some strange Thai name on his profile) or he is not listening to the right advice. He is a very articulate guy - I heard him talking to his friends after the match.
Agree that Prajnesh has a very solid all round game but not quite sure about his quickness (both foot speed and reflexes). Those do go down with age and I don't think those were his strengths to begin with, so perhaps age is a factor in his results now.
Full credit to Sumit for gutting out a win in a surface that doesn't favor his style of play. He may not be the smartest player out there but he gives it his all every time. Good luck on the next round. I think he will need to claw and fight to win again....