The comeback effort gave Zillman a shot at claiming back-to-back tournaments for the first time. Zillman is on a roll since winning the War by the Shore at The Tennis Club Newport Beach last week.
Zillman faces sixth-seeded Jake Hoeger of Redondo Beach on Friday at 11 a.m. Hoeger advanced to the title match after Corona del Mar's Henry Gordon, the No. 3 seed, retired due to an injury.
The one advantage Zillman held over Tseng was that he only played once on Thursday. Tseng played twice, in the quarterfinals in the afternoon and semifinals in the evening.
The double-duty took a toll on Tseng late in each set.
Zillman took advantage of a tired Tseng, an incoming sophomore at University High. Zillman came back from a 4-3 deficit in the first set and then roared back when he was down, 4-1, in the second set.
The way in which Zillman rallied impressed his father, Justin, who is also Zillman's coach. Dad was able to make the match after Tseng asked for it to start two hours later because of his afternoon match with Teague Hamilton.
Tseng took care of business in the quarterfinals against Hamilton, winning 6-4, 6-2 and getting revenge on the Laguna Beach High player, who knocked out Tseng in the semifinals of the War by the Shore. The victory set up a third meeting between Tseng and Zillman.
The two faced each other when they were younger and each time Zillman prevailed. The latest match appeared to be there for the taking for Tseng.
Tseng should have probably stuck to the 3:30 start. Whenever Justin makes his son's matches, Zillman said he feels better about himself.
Zillman gained confidence every time Tseng was the first to win four games in a set. Once Zillman took control, Tseng had no answers.
"He just hits everything back deep and it's pretty hard to get [on] the offensive," Tseng said.
"Toward the end, I was getting a bit tired."
Zillman looked like the fresh player on the court. Playing twice on Wednesday seemed to help him out.