Duck Hee Lee defeated Shuichi Sekiguchi 6-0 6-3 in the Seoul CH round of 32 on hard. The result followed the form book — Duck Hee Lee came in leading the head-to-head 2–1, defending last year's quarter-final. Duck Hee Lee extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-03-21 | Japan F3 | SF | hard | Duck Hee Lee | 7-5 6-3 |
| 2015-04-06 | Indonesia F2 | F | hard | Duck Hee Lee | 6-1 3-0 |
| 2013-08-12 | China F7 | QF | hard | Shuichi Sekiguchi | 6-3 6-0 |
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About