'Jeopardy!' champ James Holzhauer is breaking the bank

Holzhauer is closing in on Ken Jennings' record for the most money won in a single season.
1:40 | 04/23/19

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Transcript for 'Jeopardy!' champ James Holzhauer is breaking the bank
Finally tonight, he did it again. So now the question, is he going to break the bank? He did it again last night. 13 wins in a row. Unless you've been living under a rock for the past two weeks, you know about our current champion, James. Reporter: He's a 34-year-old professional sports gambler from Las Vegas. What is oxidized? Right. Reporter: But it's not just the trivia he has down, it's the math. The science behind betting. Wagering big, going for the high value clues first. $1,000 please. Reporter: And contestants now ask him how he does it. Some of them, I think, are pressing me, how did you get so good at the buzzer? I don't think there's enough time for them to practice. But I tried offering them some tips. Reporter: What are the tips? Try not to have any extra motion, look at the lights on the board, try to wait for the lights, and buzz right away. Reporter: The average winner takes home around $20,000 a night. He's averaging $71,000. You had $52,126. Did you come up with the correct response? Yes. And hi, Zach, Emma, and lily. They're my friends. Reporter: He could break $1 million tonight. Has "Jeopardy!" Met its match? We'l

This transcript has been automatically generated and may not be 100% accurate.

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