Atdhe Nuhiu gave Wednesday the lead after 25 minutes and matters were made worse for Yeovil when they were reduced to ten men following Brodie Webster's dismissal.
Midway through the second half it was 19-year-old winger Ralls who would make his statement on the game when the Englishman skipped past Wednesday's Jordan Spence and struck crisply past Chris Kirkland.
Speaking to the Daily Star after the match, Ralls said, "I'm glad to see that they've (Cardiff) picked up some points as well but when I came here I'm a Yeovil player, that's a bit of advice that (manager) Malky (Mackay) gave me when I came here and I've done that."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!