In the Ravens' third preseason game against the Washington Redskins, Gillmore broke through several defenders to score a long touchdown.

The play was called back by penalty, but the media praised Gillmore for putting his determination to make the team on display.

Gillmore would rebound the following week against the Oakland Raiders with a five-catch, 88-yard performance in which he caught two touchdowns, one of which he scored after bulldozing through three defenders.

During training camp, Gillmore suffered an MCL injury which required surgery, causing him to miss the 2017 season.

[8] Gillmore added 40 pounds and attempted to make the switch to offensive line in the 2018 offseason, but was not signed by a team.