Eldorado-Sonora 90-year rivalry renews. Take the test. Dr Pepper HSFootball by: Kenneth Grimm Posted: Sep 23, 2020 / 03:44 PM CDT / Updated: Sep 23, 2020 / 04:48 PM CDT This week Eldorado and Sonora renew a rivalry that dates back over 90 years. Take the test below and be entered in a sweepstakes drawing for a chance to win a $25 Walmart Gift Card!