Not a ton of precedent here.
Starting lineups on senior night (vs different starters the game before):
2013: Griffey, McLaurin, Paul, Bertrand, Richardson (Egwu and Abrams)
2014: Egwu, Hill, Abrams, Rice, Nunn (None) - Ekey left on bench
2015: Egwu, Starks, Hill, Nunn, Rice (None) - No Other Seniors
2016: Finke, Nunn, JCL, Lewis, Hill (None) - No Other Seniors
Bubble year of 2014 saw Ekey on bench. 2013 had Bertrand and Griffey starting in place of Egwu and Abrams. If I had to guess, Tate gets the start with Thorne getting minimal minutes. Groce is loyal dude, maybe to a fault.