After being terrorised by a fit-again Pat Cummins in a tough initiation, Weatherald was the last batter out of the nets at Perth Stadium in Tuesday's optional session.
Staying to the end to throw him balls was former Australia star Mike Hussey.
The 31-year-old Weatherald even outlasted marathon nets men Steve Smith and Marnus Labuschagne.
Hussey, aka 'Mr Cricket', didn't make his Test debut himself until he was 30, then scored 19 centuries.
The Sheffield Shield's leading run-scorer last season, Weatherald is a strong chance to become Usman Khawaja's sixth opening partner since David Warner retired from Test cricket in January 2024.
With South Australia hero Brendan Doggett almost certain to replace injured quick Josh Hazlewood, Weatherald could ensure Australia blood two Test debutants in the same match for the first time since 2019.
Weatherald, who moved from Adelaide to Tasmania in 2023, is in his first Australian squad and is eager to impress his teammates.
The left-hander has joked that Khawaja doesn't know who he is, with the 84-Test veteran last week commenting on a video of Weatherald with: "who this".
"He still calls me Jack," said Weatherald, tongue-in-cheek, about his relationship with Khawaja.
"We'll get there eventually.
"Hopefully if I get a game, he can call me Jake.
"Meeting people you admire so much has been a pretty cool experience.
"Steve Smith, Usman Khawaja, Patty Cummins, guys you've revered in your career for such a long time, now you're rubbing shoulders.
"For me it's just getting to know them a bit better and just trying to crack into what I do well as well, and not to get too overawed with everything that's going on."
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