With an impressive win last weekend, Isaac del Toro reminded the sporting world why insiders consider him the most gifted young stage racer in cycling today. Del Toro, 22 and a native of Baja California, crushed the final two stages — both featuring summit finishes — and cruised to victory on Sunday at the 78th Tour Auvergne-Rhône-Alpes, one of the foremost races in the lead-up to the Tour de France. “To win a race like this against such strong…