The Facts: The 49ers continue to have huge expectations of Pettis as he enters his second NFL season. "We loved the way he closed this season," GM John Lynch said. "There's some maturation that I think is naturally going to come in terms of putting some girth on and some strength. I think this offseason is very important for him."

Diehards Line: San Francisco's second-round pick came on strong at the end of his rookie campaign and ended 2018 with 467 receiving yards and five touchdowns. Added strength and body mass will help make Pettis more physical, durable and explosive in 2019 and beyond. He'll be a player to watch heading into this year's draft.