Newby, the Otago skipper and blindside flanker, is set to play his last game for Otago and the Otago Rugby Football Union has come to the party, printing 1000 masks depicting Newby.
The first 1000 people through the gate will get the masks to wear, while ORFU marketing manager Chris Green said people could also pick up the masks from the union's offices.
The mask tradition was first introduced when Tony Brown left the Highlanders for Japan in 2004.
It was repeated last year with the departure of hooker Anton Oliver, prop Carl Hayman, lock Filipo Levi and flanker Josh Blackie from the Highlanders.
Newby has played four seasons with Otago and six seasons with the Highlanders, playing 67 times for the southern franchise.
He will play his 29th match for Otago tomorrow night.
Newby has signed a three-year contract to play for English premier side Leicester starting next month.
