San Francisco 49ers first-round draft pick Arik Armstead, center, holds up a jersey next to head coach Jim Tomsula, left, and General Manager Trent Baalke during an NFL football news conference Friday, May 1, 2015, in Santa Clara, Calif.
San Francisco 49ers first-round draft pick Arik Armstead, center, holds up a jersey next to head coach Jim Tomsula, left, and General Manager Trent Baalke during an NFL football news conference Friday, May 1, 2015, in Santa Clara, Calif. Marcio Jose Sanchez AP
San Francisco 49ers first-round draft pick Arik Armstead, center, holds up a jersey next to head coach Jim Tomsula, left, and General Manager Trent Baalke during an NFL football news conference Friday, May 1, 2015, in Santa Clara, Calif. Marcio Jose Sanchez AP
49ers with Matt Barrows

49ers with Matt Barrows

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Arik Armstead already familiar with 49ers’ defense

May 01, 2015 02:58 PM