Aiyuk was the focal point of the 49ers' offense at the end of last season. Many fantasy managers are worried his production may slip this year with the return of George Kittle and Deebo Samuel from injury. This is a fair concern, but managers should note that Aiyuk's success last year was due to his strong play on the field. He's capable of turning screen passes into TD's, beating defenders deep down the field in one-on-one situations, and even managed to rush for two touchdowns last year. From Week 4 on last season, Aiyuk was WR15.