HS Prannoy upset World No. 5 Jonatan Christie 10-21, 21-12, 21-18 in a 61-minute men’s singles match on Day 2 of the Singapore Open at Singapore Indoor Stadium, ANI reported. Prannoy recovered after losing the opening game and scored five straight points from 16-18 in the decider to set up a Round of 16 match against Loh Kean Yew.