The –KBUsMesterskabsræ1927–28 KBUs Mesterskabsrække was the 40th season of the Copenhagen Football Championship since its establishment in 1889, and the 26th under the administration of Kjøbenhavns Boldspil-Union (KBU). The season was launched on 21 August 1927 with a match between BK Fremad Amager and B.93 at Københavns Idrætspark and concluded on 9 May 1928 with the final match of the regular league fixtures, with the play-off promotion/relegation match being held on 4 July 1928. B.93, playing in white shirts, started as the defending league champions from the 1926–27 KBUs season. The Copenhagen FA first-tier league ran simultaneously with the inaugural edition of the 1927–28 Danmarksmesterskabsturneringen i Fodbold, in which all of the league's teams participated. All six teams in the league, including the winners and the runners-up of the 1927–28 KBUs A-række automatically qualified for the 1928 edition of KBUs Pokalturnering, while the same teams and the third placed team of the 1927–28 KBUs A-række qualified for the 1928–29 Danmarksmesterskabsturneringen.
This was the first season, that the new offside rule was implemented in the league's matches. Østerbro-based B.93 won their second consecutive title of the league and their 7th overall KBU league championship, while B 1903 also finished as runners-up for the second year in a row. Vilhelm Nielsen from Kjøbenhavns BK became the league's top goalscorer with 9 goals. BK Frem, at that time based in the Vesterbro-area of Copenhagen, secured the regional cup title by defeating the defending cup champions, B.93, in the 1927 KBUs Pokalturnering final. BK Fremad Amager finished last in the Copenhagen FA's primary football league, but managed to win the first promotion/relegation play-off match against the 1927–28 KBUs A-række winner, Hellerup IK, securing their spot in the next season of KBUs Mesterskabsrække. All league matches during the season, including the play-offs, were played at Københavns Idrætspark.
Season summary
The new offside rule was implemented in the league's matches this season. The newspapers speculated, that the implementation would result in several more goals being scored. During the course of the season, BK Fremad Amager appeared in three different kits — in a match against BK Frem at Københavns Idrætspark, the players of the Amager-based even had to change their outfit from red shirts/white shorts to red shirts/black shorts in the second half, because the combination were too similar to BK Frem's kit (red/blue vertical striped shirts and white shorts) in the first half.
The defending league champions from the previous season, the Østerbro-based club B.93, played the inaugural match on 21 August 1927 at Københavns Idrætspark against BK Fremad Amager, that had finished in the last spot of the league in the previous season. BK Fremad Amager had made some changes in the line-up, which now included a new goalkeeper, Heinrich Hansen, as a replacement for last season's player in that position, Schnabelrauch. The first match of the season was played in pouring rain, lightning and thunder, and although much of the football field was under water, the game was not cancelled by the referee, Cand. jur. Otto Remke (affiliated with Akademisk BK). The first goal of the match — which was attended by 3,000-4,000 spectators — and the season, was made after only 3 minutes of play by the BK Fremad Amager inner winger, Henrik Selschau, by scoring between the legs of B.93's goalkeeper, Svend Jensen.
For the new season, Kjøbenhavns BK had reconstructed their first senior team's line-up, so it consisted mostly of new and young players, having played in the youth team's league under the Copenhagen FA — only the old players, and national team player, the midfielders Valdemar Laursen and Aage Jørgensen, and the defender Steen Steensen Blicher were kept on the roster. The two teams, Kjøbenhavns BK and BK Frem, reportedly fielded the youngest rosters in the league, when they meet each other in their first season match on 11 September 1927 at Københavns Idrætspark. The match originally ended in a 1–1 draw, but Kjøbenhavns Boldspil-Union (KBU) later administratively changed the score to 0–0! and awarded Kjøbenhavns BK the game as a 2 points victory due to the BK Frem player Eiler Holm being used illegally after having played on the club's reserve team earlier in the fall of 1927.