A former captain of Wellington College, Blackwell has carved out a reputation as a hard-working and reliable lock or loose forward.
Good in the set piece at both scrum and lineout, he has deceptive skills with an ability to offload in contact.
He suffered an injury in the 2017 Wellington campaign which set him back for the 2018 Super Rugby season.
Blackwell was awarded the Hunters Award at the 2018 Hurricanes Player of the Year Awards. The Hunters Award is given to the Hurricanes player who did not see a lot of game time but always turned up with the right attitude and helped challenge and support the players with their match-day preparations.
He returned in 2018 and has established himself as a first choice lock through his excellent work rate that often sees him leading the tackle count.