On December 19, 2017, Baker was one of four Cardinals named to the 2018 Pro Bowl as a special teamer. In Week 16, he tied his season-high of 13 combined tackles (eight solo) and broke up a pass in the Cardinals’ 23-0 victory against the New York Giants. He finished his rookie season in 2017 with 74 combined tackles (58 solo) and seven pass deflections in 16 games and seven starts.