He was ridden by Lisa Allpress, who thought she may have gone out too hard in front.
"He is the sort of horse though that you don't want to interfere with too much and let him do his own thing," she said.
Saracino is now a three-time winner at Group Two level, having earlier claimed the Foxbridge Plate and the Danehill Stakes. He is also Group One placed in the Manawatu Sires' Produce Stakes and the NRM Sprint.
Top Prospect hit the line strongly for second ahead of Cut Me Loose and Ferrando wilted to fourth.
Meanwhile Gary Vile's emerging staying star Rock On was successful in the Listed New Zealand St Leger.
Rock On settled back on the fence before rider Jonathan Riddell angled the son of Road To Rock off the rail, but had to switch back inside for a clear run in the straight and they finished strongly to down All In Vogue.
And hot sprinter Signify dashed home to add the Listed Phill Cataldo Bloodstock Lightning Handicap title to the group one Telegraph crown he claimed on the track in January.