Hulking Australian age group prop Lomax, 20, is the son of former Kiwis rugby league prop John Lomax and will be the only player to make his Highlanders debut if called into action.
All Blacks fullback and Highlanders co-captain Ben Smith makes his first top- flight appearance since taking a sabbatical midway through last year's international schedule.
Fellow co-captain Ash Dixon wins the starting hooker berth over one-Test veteran Liam Coltman.
Mauger says the opening game has been on the players' mind since gathering before Christmas and hope it reflects against a strong Blues side.
"Throughout the pre-season we have had a real focus on producing a performance that we and our supporters can be proud of," he said.
"It's great we have the opening match at our home ground for the Gordon Hunter trophy; it gives us a really good opportunity to connect with our people".
The late Gordon Hunter coached both teams and they have contested the silverware in his name 16 times since 2002.
The record is eight wins each, with the Highlanders the current holders.
Highlanders: Ben Smith (co-captain), Waisake Naholo, Rob Thompson, Teihorangi Walden, Tevita Li, Lima Sopoaga, Aaron Smith, Luke Whitelock, Dillon Hunt, Liam Squire, Tom Franklin, Jackson Hemopo, Siate Tokolahi, Ash Dixon (co-captain), Daniel Lienert-Brown. Reserves: Liam Coltman, Aki Seiuli, Tyrel Lomax, Dan Pryor, Elliot Dixon, Kayne Hammington, Fletcher Smith, Matt Faddes.