Seahawks tight end Nick Vannett has high-ankle sprain

Seattle Seahawks rookie tight end Nick Vannett suffered a high-ankle sprain in last Thursday’s preseason game against the Minnesota Vikings. Vannett was injured in the third quarter on his only catch of the game. Trevone Boykin hit Vannett for a 15-yard gain before being tackled from behind by Andrew Sendejo, who landed on his ankle.…