49ers tout draft ability in announcing Brandon Aiyuk extension

SANTA CLARA — The 49ers’ history with first-round draft picks is spotty, but they’ve extended their best selections under general manager John Lynch and coach Kyle Shanahan, first with Nick Bosa last year and officially with Brandon Aiyuk on Friday.

A day after Aiyuk agreed to a four-year, $120 million extension, the 49ers announced his signing that keeps him under their control through 2028. He was to play this season on a $14.1 million option, so that salary surely has been reallocated to spread out the salary cap hit.