Getty Images SportSiddhant LazarLiga MX giants Tigres upset by Nicaraguan side Real Esteli in leg one of CONCACAF Champions Cup seriesCONCACAF Champions CupTigresLiga MXThe Mexican side were without key stars including star Andre Pierre-Gignac and were stunned by the Nicaraguan minnowsTigres lost 1-0 against Real Esteli in the first legThe Mexican giants were without several regular starsSecond leg takes place on February 12 at the Estadio UniversitarioArticle continues below