SANTA CLARA — The 49ers’ plan at wide receiver this season was draped in maroon and gold. The Niners were supposed to ride into this postseason on the backs of two Arizona State products, a Tempe two-step atop the wide receiver depth chart designed to torment defensive coordinators from Seattle to Philadelphia. Brandon Aiyuk (Arizona State 2018-19) was the established star, the alpha, the $30-million man. Ricky Pearsall (2019-21 before transferring to Florida) was the first-round heir apparent, the route-running savant. Together, they were the Sun Devil pincer. Instead, as the 49ers stare down the barrel of a win-or-go-to-Cabo playoff date with the Eagles this Sunday, the wide receiver...
