The Gallagher Chiefs reinforcements of prop Reuben O'Neill, loose forward veteran Adam Thomson, rookie Lisati Milo-Harris and electrifying back Solomon Alaimalo will complete an exciting twenty three.
Gatland said the team were eager to return to FMG Stadium Waikato and deliver a much improved performance for their fans.
"Last week against the Highlanders we weren't clinical enough and they capitalised on those opportunities we gave them. This week we need to be sharper and deliver a more dominant performance.
"The Blues have some great playmakers and will be a dangerous team. They performed well last week against the Hurricanes and will be hoping to back it up again.
"The guys are excited to run out to the field in front of what is expected to be a near capacity crowd. It is now up to us to deliver for them and show our thanks for their support," said Gatland.
Gatland finished congratulating Stevenson on his achievement.
"Shaun is a talented player, who has great attacking ability. He has already demonstrated that earlier this year on a number of occasions and we hope this weekend he can celebrate in a similar fashion."