Ever since quarterback Tua Tagovailoa suffered another concussion in Week 2, the Miami Dolphins have struggled, especially on offense. They have failed to score more than 15 points in a game starting with that Week 2 loss to the Buffalo Bills,

Miami Dolphins quarterback Tua Tagovailoa is expected to make his return to the football field on Sunday vs. the Arizona Cardinals after being out since Sept. 12 when he suffered a concussion—his fourth concussion in five years. Many NFL figures called for him to retire, but Tagovailoa wants to continue playing football.

Newly allowed as in-season safety measures this year, the Guardian Caps are presently believed to reduce concussions by 46%, and some Dolphins staffers, including head coach Mike McDaniel, approached Tagovailoa about using the added covering during his recovery, per NFL Media.