Baker scored three of his team's 15 tries and kicked five conversions.
Blindside flanker Tanielu Taa had an impressive workrate in the Napier East pack. Openside flanker Zinzan Ropitini was the best of the Wairoa players.
Today's games will see Napier East take on Hastings East and Wairoa play Napier West. Hastings West have the bye.
Scorers:
Napier West 27 (Jake Elsworth-Robertson 2, Kyle Cornelissen, Patrick Teddy, Keegan Christian-Goss tries; Christian-Goss con) Hastings West 21 (David Tuanaki, Ben Frame, Charles Gillies tries; Jordan Thompson-Dunn 3 cons). HT: 10-7.
Napier East 93 (Thomas Baker 3, Sheridan Panapa 2, Dakota Panapa 2, Luke Gichard 2, David Puna, Te Kahika Thompson, Tanielu Taa, Leighton Shaw, Joshua Chamberlain, Dante Hohepa tries; Baker 5, Shaw 3, Taa cons) Wairoa 0.
Standings: Hastings West 8, Hastings East 7, Napier West 7, Napier East 7, Wairoa 0.