Tasmanian cricket has two big pairs of shoes to fill after head coach Jeff Vaughan and Hurricanes batting coach Michael Di Venuto accepted assistant coach roles with the national team.
Arriving from South Australia as a senior assistant in 2017, Vaughan progressed to the top job in the Tigers' one-day and four-day set-ups as a restructure saw Adam Griffith named director of coaching and Hobart Hurricanes coach.
After a fifth-placed Shield campaign in 2019-20, Vaughan led the Tigers to mid-table finishes in both the Shield and one-day competitions last season.
He will stay with the team until August, with Cricket Tasmania to begin the search for his replacement shortly.
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"It's been a difficult decision," Vaughan said.
"We have established a strong culture here at the Tigers and feel the team is really where it needs to be for ongoing and sustained success at a domestic level.
"However, just like for the majority of cricketers, as coaches we aim to reach the highest level in our roles, and this was an opportunity that was just too good not to put my hand up for.
"The entire playing group here has been fantastic to work with and I'm thrilled I'll still get to work with some of the guys in the national set-up."
Cricket Tasmania boss Dominic Baker said both Vaughan and Hobart-born Di Venuto, who played nine one-dayers for Australia, would be big losses to the program.
"It's no secret that Jeff is not only very good at what he does, but one of the nicest guys in cricket," Baker said.
"We are, of course, incredibly proud that Jeff has been called up for national honours.
"We know how highly regarded he is by our playing group and have no doubt that that sentiment will be emulated in the Australian set-up too.
"Just like when we have a player selected for the Australian set-up, it's recognition of how good they are at what they do, so not only are we thrilled for Jeff and Michael personally, but we are proud to have provided a suitable environment for them - and others - to thrive."