Australia A 253 and 50 for 1 (Kellaway 29*, Renshaw 20* van Beek 1-14) lead New Zealand A 246 (Solia 60, Bruce 44, Hay 43, Buckingham 6-58) by 66 runs
On the finest day of his first-class career, Buckingham took 6 for 58 to help dismiss New Zealand A for 246 in reply to Australia A's 253.
His pick of the deliveries was a hooping in-swinger to Tom Bruce, taking the right-hander's outside edge to have him caught at slip by Renshaw.
The return marked Buckingham's first five-wicket haul in first-class cricket, after he made his debut for South Australia at the end of the 2022-23 season.
Legspinner Mitchell Swepson also bagged two wickets in the innings while Renshaw claimed 2 for 32 with his offspinners.