CREATE TABLE table_22573 ("Episode #" FLOAT, "Air date" TEXT, "Team 1" TEXT, "Players left after Round 1" TEXT, "Team 2" TEXT)

What is the original air date that had the wykeham wonderers as team 1?
SELECT "Air date" FROM table_22573 WHERE "Team 1" = 'Wykeham Wonderers'
SELECT "Air date" FROM "table_22573" WHERE "Team 1" = 'Wykeham Wonderers'