At Worlds in Saitama, Japan, Tennell came in tenth place after a "disappointing" short program, earning 69.50 points. She successfully completed an Axel and triple flip, but underrotated the last jump in her triple Lutz-triple toe combination, even though she had performed it consistently in practice. She successfully completed seven triple jumps during her free skate, including a double Axel and a triple Lutz-triple toe combination jump early in her program, earning a season's best score of 143.97 points and coming in seventh place overall, with 213.47 points. Tennell told reporters that she was happy with her free skate, which was called "one of the best skates of her career", and that her confidence had improved since Four Continents after wavering earlier in the season. The American women were unable to secure three slots for the 2020 Worlds Championships, since with Tennell's seventh-place finish and teammate Mariah Bell's ninth-place finish, they were unable earn the required combined placements of at least 13th place.