Gill, competing in Rarotonga at the Oceania Area Athletics meet, threw a lifetime best of 20.70m with the senior 7kg shot to claim the Oceania title.
The new mark improves on Gill’s previous best of 20.38m and is also a new championship record.
On paper, world indoor bronze medallist Walsh, who did not feature in the Oceania Championships as he is currently training in Switzerland with double Olympic women's champion Valerie Adams, still has the measure on Gill by some margin.
Walsh raised the New Zealand record to 21.26m in March - almost a full metre beyond Gill’s new best.
However, the match-up between the two Kiwi throwers will arguably be the most anticipated showdown of the entire Commonwealth Games.
Elsewhere at the Oceania Championships, other titles have gone to Anna Thomson in the triple Jump, Georgia Hulls in the 100m, Ashley Exeter in the para discus, Max Attwell in the octathlon and the junior women's 4x100 relay team.
Silver medals have gone to Matt Dryden, Brooke Somerfield, Caitlyn George, Hamish Dewar, Rosie Elliott and Atipa Mabonga while bronze medallists have been secured by David Elliott, Ariana Lord, Dale Pritchard, Ariana Blackwood, Hamish Dewar and the mixed medley relay team.
The championships wrapped up yesterday with a closing ceremony.
For more pictures check out Harvie Allison's website at http://www.harvpix.com/