diff --git a/src/battle_setup.c b/src/battle_setup.c
index 347486a0b0..cb7b63ebe8 100644
--- a/src/battle_setup.c
+++ b/src/battle_setup.c
@@ -296,7 +296,8 @@ const struct RematchTrainer gRematchTable[REMATCH_TABLE_ENTRIES] =
     {{TRAINER_TRENT_1, TRAINER_TRENT_2, TRAINER_TRENT_3, TRAINER_TRENT_4, TRAINER_TRENT_5}, 0x0, 0x1b},
     {{TRAINER_SAWYER_1, TRAINER_SAWYER_2, TRAINER_SAWYER_3, TRAINER_SAWYER_4, TRAINER_SAWYER_5}, 0x18, 0xc},
     {{TRAINER_KIRA_AND_DAN_1, TRAINER_KIRA_AND_DAN_2, TRAINER_KIRA_AND_DAN_3, TRAINER_KIRA_AND_DAN_4, TRAINER_KIRA_AND_DAN_5}, 0x18, 0x3e},
-    {{TRAINER_WALLY_3, TRAINER_WALLY_4, TRAINER_WALLY_5, TRAINER_WALLY_6, TRAINER_WALLY_6}, 0x18, 0x2b},
+    // Wally's entry index is hardcoded.
+    [REMATCH_WALLY_ENTRY] = {{TRAINER_WALLY_3, TRAINER_WALLY_4, TRAINER_WALLY_5, TRAINER_WALLY_6, TRAINER_WALLY_6}, 0x18, 0x2b},
     {{TRAINER_ROXANNE_1, TRAINER_ROXANNE_2, TRAINER_ROXANNE_3, TRAINER_ROXANNE_4, TRAINER_ROXANNE_5}, 0x0, 0x3},
     {{TRAINER_BRAWLY_1, TRAINER_BRAWLY_2, TRAINER_BRAWLY_3, TRAINER_BRAWLY_4, TRAINER_BRAWLY_5}, 0x0, 0xb},
     {{TRAINER_WATTSON_1, TRAINER_WATTSON_2, TRAINER_WATTSON_3, TRAINER_WATTSON_4, TRAINER_WATTSON_5}, 0x0, 0x2},
@@ -305,7 +306,8 @@ const struct RematchTrainer gRematchTable[REMATCH_TABLE_ENTRIES] =
     {{TRAINER_WINONA_1, TRAINER_WINONA_2, TRAINER_WINONA_3, TRAINER_WINONA_4, TRAINER_WINONA_5}, 0x0, 0x4},
     {{TRAINER_TATE_AND_LIZA_1, TRAINER_TATE_AND_LIZA_2, TRAINER_TATE_AND_LIZA_3, TRAINER_TATE_AND_LIZA_4, TRAINER_TATE_AND_LIZA_5}, 0x0, 0x6},
     {{TRAINER_JUAN_1, TRAINER_JUAN_2, TRAINER_JUAN_3, TRAINER_JUAN_4, TRAINER_JUAN_5}, 0x0, 0x7},
-    {{TRAINER_SIDNEY, TRAINER_SIDNEY, TRAINER_SIDNEY, TRAINER_SIDNEY, TRAINER_SIDNEY}, 0x0, 0x8},
+
+    [REMATCH_ELITE_FOUR_ENTRIES] = {{TRAINER_SIDNEY, TRAINER_SIDNEY, TRAINER_SIDNEY, TRAINER_SIDNEY, TRAINER_SIDNEY}, 0x0, 0x8},
     {{TRAINER_PHOEBE, TRAINER_PHOEBE, TRAINER_PHOEBE, TRAINER_PHOEBE, TRAINER_PHOEBE}, 0x0, 0x8},
     {{TRAINER_GLACIA, TRAINER_GLACIA, TRAINER_GLACIA, TRAINER_GLACIA, TRAINER_GLACIA}, 0x0, 0x8},
     {{TRAINER_DRAKE, TRAINER_DRAKE, TRAINER_DRAKE, TRAINER_DRAKE, TRAINER_DRAKE}, 0x0, 0x8},