Lamborn played for Hawke's Bay U18 and U20 teams.[2]
Lamborn debuted for the Magpies in 2013, however it was in 2015 when his performances really started to catch the eye. He was named as Hawke's Bay's 2015 MVP as they won the ITM Cup championship with a 26-25 loss over Tasman .[3] Subsequently, he was named as a member of the Hurricanes wider training group ahead of the 2016 Super Rugby season.[4]