McDonald looked set to wrap it up early at 5-up after eight holes and 2-under the card. To her credit, Noble fought gamely and a birdie on the ninth put her 4-down at the turn.
A couple of uncharacteristic mistakes by McDonald opened the door a little for Noble, but she soon slammed it shut for a comfortable victory.
McDonald cruised through day 1, beating Ōpōtiki’s Sarndra Tiopira and Electrinet Park’s Karen Hay on the same hole - the 13th.
In other finals, Chrissie Courtman (Hamilton) beat Megan Allen (Poverty Bay) in the Sandown Trophy division 2; Maxine Francois (PB) beat Paula Kane (Royal Auckland and Grange) in the Awapuni Trophy division 3; Kirsty Shaw (PB) beat Viv Bell (PB) in the Waikanae Trophy division 4; and Rachel Young (Putaruru) beat Robyn Ngatai (Te Puia Hot Springs) in the Nick’s Head division 5.