Former Australia under-19 right arm leg spinner Kyle Gardiner, who is playing for the Central Hawke's Bay club this year, celebrated his Hawke's Bay debut with 6-66 off 19 overs. Hawke's Bay captain Jayden Lennox took 3-18 off 19.5 overs.
Hawke's Bay scored 234/7 declared during their second innings. Napier Technical's Todd Watson was 84 not out and Havelock North's William Clark, who won the top male cricketer award at the Hawke's Bay Secondary Schools Sports Awards function last month, contributed a valuable 31 runs.
Castle said Clark and Watson functioned well and produced a partnership of just under 100 runs.
Chasing 204 for the outright win, Taranaki were 64/7 when play ended. Taradale fast bowler Ben Stoyanoff took 5-6 off 11 overs in what Castle described as "an unbelievable effort."
Stoyanoff's clubmate Luke Kenworthy was a late withdrawal from the Bay team after collecting a quad strain while scoring a century in club play on Friday night.
He was replaced by Napier Technical's former Black Cap Jesse Ryder who made his first appearance for Hawke's Bay in 19 years.
"While Jesse didn't score as many runs as he would have liked [six in the first innings and 10 in the second] he was definitely valuable to the group," Castle added.
■ The Indigo Napier Hawke's Bay women's cricket team beat Taranaki by 205 runs in their first MJF Shrimpton Trophy fixture of the season in Whanganui on Sunday. Four consecutive wickets from White Fern Rosemary Mair was the highlight of the clash.