Davis (52) was also successful with Fly The Flag, Zealous Lady and Tonks Street.
"It was a good result. The best I have had before is three wins in a day," Davis said.
Davis also drove Another Homer to win the Roxburgh Cup in January.
He drove Nobilos Chardonnay to win the 1997 Nelson Winter Cup for Rangiora trainer Ian Cruickshank.
Another Homer is trained at Leithfield Beach by Robbie Holmes, who won the Nelson Cup last year with Kiwi Fantasy.
Another Homer is raced by his Waipara breeder Graham Pearson.
Fly The Flag and Zealous Lady are trained by Margot Nyhan, partner of Davis.
She has a share in the ownership of both horses.
It was the third win in seven starts for the 2yr-old filly, Fly The Flag, who is part-owned by Nyhan.
Fly The Flag ran the 2400m in 3.06.8, 0.4sec outside the New Zealand record for a 2yr-old filly set by Jollity at Winton in 1994.
Nyhan races Zealous Lady with Gary Clarke, of Dunedin.
They bought the Brylin Boyz-Zizette filly as a weanling.
Clarke is the owner of Red Baron, who had to be scratched from the Nelson Cup yesterday after a bout of colic.
Red Baron has won two races from the stable of Geoff Dunn.
Zealous Lady is a half-sister to Buster Keaton, winner of seven races from the Nyhan stable.
Buster Keaton won at the Nelson meeting 12 months ago but he has not raced since after being kicked by another horse.
Zealous Lady was among six 3yr-olds to win yesterday.
That group included Black Mambo who completed a double for the meeting.
Kahdon became the first New Zealand-trained filly to win the Victoria Trotting Oaks for 11 years when successful at Melton on Friday night.
Kahdon, driven by Mark Jones, who took over as trainer of the filly five days earlier, won by three and three-quarter lengths in a 2.03.5 rate for the 2240m (mobile).
The previous New Zealand-trained winner of the race was Sunning (Kevin Townley) in 1999.
Kahdon will remain in Melbourne for the Victoria Trotting Derby at Maryborough on July 18 and the Australasian Breeders' Crown.
