How were 8 tight ends drafted before George Kittle in 2017?

George Kittle was drafted in the fifth round out of Iowa by the 49ers in 2017. He was the ninth tight end selected.

Gerald Everett (2, 44)

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Gerald Everett has improve his catch total in each of his first three seasons, going from 16 to 33 to 37. He also has improved yardage each year and has a total of 973 yards and seven TDs. The South Alabama product has shown flashes but nothing like Kittle.