Mapapalangi was educated in Auckland, he attended Kelston Boys High School and Liston College both in West Auckland before attending Sacred Heart College in his final year. After graduating from high school, he spent 2 seasons in the Auckland youth structures before heading south to Waikato looking for further opportunity. 2 seasons spent in Waikato gave him the breakthrough he was looking for and he headed to Manawatu in 2015.[2]
Club career
After spending time with the Chiefs development squad in the early part of the year, Mapapalangi made the Manawatu squad ahead of the 2015 ITM Cup season and scored 3 tries in 9 appearances during the campaign. His performances attracted the attention of Super Rugby franchise, the Hurricanes who invited him to train with their wider training group during the 2016 Super Rugby pre-season.[3]
The 2016 Mitre 10 Cup was less successful for both Mapapalangi and his side. The Turbos finished 5th in the Championship table while he made 7 appearances of which only 2 came from the start.[4]