[7] After Boston College closed their campus in March 2020 due to COVID-19, he returned to Florida and worked out on occasion with NFL players Antonio Brown and Geno Smith.

[8] Flowers became the second wide receiver in school history to be named first team All-Atlantic Coast Conference after finishing his sophomore season with 56 receptions for 892 yards and nine touchdowns.

[19] In Week 6, in the game in London, Flowers scored his first NFL touchdown against the Tennessee Titans in the Ravens' 24–16 victory.

[20] In Week 12, Flowers scored two touchdowns, a 3-yard reception and 37-yard run, in the Ravens' 20–10 win against the Los Angeles Chargers.

[21] In Week 17, after scoring a 75-yard touchdown against the Miami Dolphins, Flowers set a Ravens franchise record for most receptions (77) and receiving yards (858) by a rookie.

[25] In Week 5 against the Cincinnati Bengals, Flowers led the Ravens with 7 catches for 111 yards in the 41–38 comeback overtime win.

[26] The following week against the Washington Commanders, Flowers exploded for career-highs of 132 receiving yards on 9 catches, all of them in the first half as the Ravens won 30–23.