Vannett caught one of two targets for six yards in Sunday's 20-17 win over the Cardinals.
A week after pacing the team with four catches, Vannett was an afterthought despite starting tight end Will Dissly leaving early with a knee injury. It's highly unlikely Dissly can suit up in the near future, so Vannett should see an uptick in usage as the only tight end on the 53-man roster. However, fantasy owners should be skeptical of starting him Week 5 against a Rams defense that has allowed the second-most yards (328) to tight ends but hasn't allowed one to score yet this season.