The 2010–11 Serie D was the sixty-third edition of the top level Italian non-professional football championship. It represented the fifth tier in the Italian football league system. It originally consisted of 166 teams, with two divisions allocated 20 teams each while the other seven allocated 18 teams. After the first matchday, another team was added, increasing the number of teams to 167 and Girone I to 19 teams. Each team played two matches against every other team in its own division; a total of 34 matches for the six divisions of 18 teams, 36 matches for the 19-team Girone I, and 38 matches for the 20-team Girone A & F. Promotions The nine division winners and the winner of play off are automatically promoted to Lega Pro Seconda Divisione 2011–12. On April 10, 2011 Perugia became the first team to be promoted from Serie D in the season, winning the Girone E with three weeks remaining in the schedule, after a 3–2 home victory over Castel Rigone. This was followed one week later by Cuneo and Mantova that won Girone A and B respectively. On May 1, 2011 Treviso, Borgo a Buggiano, Santarcangelo, Arzanese won Girone C, D, F and H respectively. On May 8, 2011 Aprilia and Ebolitana won Girone G and I respectively. On June 25, 2011 Rimini was also promoted as the winner of the play off. Playoffs Teams placed second through fifth in each division enter a playoff tournament after the regular season where, eventually, three of the four semi-finalists of the final phase emerge. The fourth semi-finalist is the winner (or the final loser if the winner is already promoted) of Coppa Italia Serie D. A final match, between the winners of the semifinals, determines which team finishes first and which teams comes in second in this 37-team playoff. Eventually these teams may be included up to Lega Pro Seconda Divisione if one or more current teams runs into financial difficulties and so are not admitted in this league. Relegations Playout In Gironi B-C-D-E-G-H of 18 teams, the two last-placed teams (17th and 18th) are relegated directly. Teams ranked 13th to 16th play a two-legged playout (13th vs 16th, and 14th vs 15th) where to two losers are also relegated. If the 13th-placed is more than 8 points ahead of the 16th-placed team and/or the 14th-placed team is more than 8 points ahead of the