2020–21 First Professional Football League (Bulgaria)

[6] All matches were at first envisioned to be held without spectators, at the minimum until 31 August,[7] but this was reversed in early August (allowing for matches to be held at 50% stadium capacity and up to 1000 people per stand),[8] reportedly under pressure from fan groups, with the government's inconsistency on the matter in turn criticized in certain circles.

[10][11] Minister of Youth and Sports Krasen Kralev claimed that some of the fans of certain teams had not been observing the pandemic control protocols, such as social distancing and mask-wearing.

[17] In September 2020, the whole Etar team was initially quarantined by the regional health authorities in Veliko Tarnovo after 5 footballers' and 2 staff members' PCR tests indicated that they were infected,[18] but the match against Lokomotiv eventually went ahead without the date being changed.

[19] The fixture between Arda and Ludogorets Razgrad that was to be held on 4 October 2020 was postponed after more than 10 footballers' tests from the Kardzhali team (as well as a trainer) returned positive results.

[22] Prior to the start of the November international window, 12 Ludogorets footballers from both the first and the second teams[23] as well as additional Levski Sofia players from the senior and junior rosters were diagnosed with the virus,[24] bringing the total number of infected at the latter club to 16.

[25][26] This caused some of the players to miss out on national team call-ups and led to the postponement of Ludogorets' Bulgarian Cup match against Sportist Svoge and Levski Sofia's league game against Lokomotiv Plovdiv.

[27] After initially given the green light to be held on the planned date,[28] The Eternal Derby match originally scheduled for 21 November was eventually postponed as well,[29] taking place on 18 December.

[34] The VAR system was introduced at the start of the post-regular season phase, being first used on 3 May 2021 for the match between CSKA Sofia and Arda.

Clubs in the domestic league can have more than one sponsorship per jersey which can feature on the front of the shirt, incorporated with the main sponsor or in place of it; or on the back, either below the squad number or on the collar area.