The Eastern Institute of Technology sport and recreation student had finished 13th in the all-round competition in Melbourne.
Gavilan says Dew also helps coach at the Omni centre while working around his own hectic training schedule.
"In his level 9, he will have international competition but he won't face those gymnasts who have gone to the Commonwealth Games," she says of men's artistic acts, such Misha Koudinov, of Auckland, who has four consecutive Commonwealth Games under his belt but is back at the national level for the first time in a decade after returning home from overseas late last year en route to the world championship.
Other world champs-bound Aucklanders are Kyleab Ellis and Ethan Dick. Sam Dick, who claimed gold at the 2018 Pacific Rim Championship, is off to the Youth Olympics after the nationals.
David Bishop, of Auckland, is a bronze medallist from the 2014 Commonwealth Games and competed this year before retiring to return as coach at the nationals.
"They're all international level, which is what Tom [Dew] will doing next year," says Gavilan, adding the nationals next week will be an ideal dress rehearsal for the former taradale High School pupil.
HB TEAM
■ MAGs (men's artistic gymnastics): Saxon Rackley, 11, level 4; Sam Alexander, 13, level 5; Thomas Dew, 19, level 9; Zayne Coffey, 18, level 9.
■ WAGs (women's artistic gymnastics): Ormlie Van Veldhuizen, 11, step 5; Nikita Steffert, 15, step 5; Bella Kilmetova, 12, step 5; Ana Good, 12, step 6.
■ Rhythmic: Lia Horsley, 16, level 7.
■ Trampoline: Abigail Bennett, 15, girls' 15-16; Rhys Hurtgen, 12, boys' 13-14; Clayton Terry-Moore, 14, boys' 13-14; Cody Smith, 12, boys' 11-12.
■ Tumbling: Laura Johnson, 15, girls' 15-16.