Seong Woon Yu defeated Darren K Polkinghorne 6-2 7-6 in the Korea F4 qualifying round of 16 on hard.
No previous meetings on record.
Averages over each player's completed matches in the selected window (3 vs 27). ATP, WTA & Challenger.
wins 61% of points on serve vs Polkinghorne D.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About