[3] He played on both sides of the ball, recording 57 tackles and 11 receiving touchdowns while being named Montana's Gatorade High School Player of the Year.

[3] He originally committed to Boise State in December,[4] but then followed head coach Chris Petersen to Seattle to play at Washington.

In the season-opening 27–24 loss to the Denver Broncos, Dissly had three receptions for 105 yards and his first professional touchdown in his NFL debut.

[14] In Week 2 of the 2019 season against the Pittsburgh Steelers, Dissly caught five passes for 50 yards and two touchdowns as the Seahawks won 28–26.

[15] In Week 3 against the New Orleans Saints, Dissly caught 6 passes for 62 yards and a touchdown as time expired in the 33–27 loss.