Russia's Elena Dementieva was made to work hard for victory over American Meilen Tu in her first match since February at the J&S Cup in Warsaw.
Dementieva considered quitting tennis in recent months
The world number 13 was playing for the first time since suffering a rib stress fracture three months ago.
Former French and US Open finalist Dementieva won 6-7 (7-5) 6-0 7-5 after enduring severe cold and snow flurries.
"It was very difficult conditions," said Dementieva, who faced defeat when Tu served for the match at 5-4.
"It was freezing out there and I've never played with snow in my life.
It will take a couple of tournaments to get back my confidence
"There were ups and downs, but I'm glad I was able to go through a difficult match and difficult moments and win in the end.
"It was a very tough match for me, especially after such a long break.
"I was really nervous in the beginning and it will take a couple of tournaments to get back my confidence."
Dementieva, 25, was injured while undergoing some rigorous fitness training and while away from the game considered retirement.
"I couldn't really do anything and it was time for me to think what I want to do in my life and did I want to come back or do something else," she said.
Dementieva may now face unseeded Venus Williams, but the American's match against Michaella Krajicek of the Netherlands was postponed until Wednesday.