Sung literally just stood in the front court and waited for all of WSX's drop shots. There's just no pressure on her
No amount of coaching advice can help WSX now, it's her own lack of confidence and self-belief that's the problem.
The first several points WSX played his game were very good, but she then reverted back to her first game tactics and lost her lead.
I noticed that too, she was standing just behind the service line...I was waiting for the flat clear that never came.
If Sung JH can display this kind of form more often outside of Korea, she might have won a couple of titles already.