Fresh from riding Imperatriz to Group 1 success in Australia last weekend, Opie Bosson will be out to add another elite-level victory to his record at Awapuni on Saturday, when he partners Trobriand for Mark Walker in the Gr1 Manawatu Sires' Produce Stakes (1400m), reports NZ Racing Desk. After three wins in succession to start his career, Trobriand (Kermadec-Arboreal, by Lonhro) has played second-fiddle to unbeaten stablemate Tokyo Tycoon in his past two outings. With Tokyo Tycoon in the spelling paddock, Trobriand is the $1.90 favourite for Saturday's contest and Bosson is pleased with how the colt has progressed between runs. "I rode him at Taupo trials the other day and he's actually strengthened up… the blinkers will go on for race day and he'll be a different horse, but I am very happy with him," Bosson said. The jockey will be out of action until April 12 after Saturday's feature meeting after pleading guilty to a careless riding charge when successful on Imperatriz in the Gr1 William Reid Stakes (1200m).