[2] Metcalf made his professional debut on 3 December 2011, scoring a four-round points decision (PTS) victory over Kevin McCauley at the Robin Park Centre in Wigan, England.
[3] After compiling a record of 17–0 (9 KOs) he was scheduled to face Jorge Fortea for the vacant WBC International super-welterweight title on 9 June 2018 at the Manchester Arena, as part of the undercard of Tyson Fury's comeback fight against Sefer Seferi.
[7] In a fight which saw Metcalf receive a point deduction for repeated low blows, he scored a KO in the eighth round with a left hook to the body to capture the Commonwealth title.
[8] After a TKO victory against Jan Balog in February 2020,[9] Metcalf challenged Ted Cheeseman for the vacant British super-welterweight title on 27 March, at the Europa Point Sports Complex in Gibraltar.
He made it back to his feet on unsteady legs, prompting referee Ian John Lewis to call a halt to the contest, handing Metcalf the first defeat of his career via TKO.