CREATE TABLE table_26673 ("Institution" TEXT, "Nickname" TEXT, "Location" TEXT, "Founded" FLOAT, "Type" TEXT, "Enrollment" FLOAT, "Joined" FLOAT, "Left" FLOAT)

What university team is referred to as the tigers?
SELECT "Institution" FROM table_26673 WHERE "Nickname" = 'Tigers'
SELECT "Institution" FROM "table_26673" WHERE "Nickname" = 'Tigers'