The New Frontier is an older property on the Strip that will eventaully be replaced with a new upscale resort. But right now through the end of this year they have a online coupon which you can print out which offers $5 matchplay on any of their blackjack tables. You must be a new member of their slot club but that doesn't take long to sign up for. This coupon may not be worth a trip on its own but if you are down that end of the strip it may be worth it.
New Frontier $5 Matchplay Link