rounds, consisting of amateur and lower-league teams, are played during consecutive weekdays in May with amateur teams advancing to face USL clubs in geographical pairings in the second round. The winner of each match progresses to the next round and the loser is eliminated from the tournament. MLS clubs enter play in the fourth round, matched geographically with the winners of the third round to play on a date in June that is determined by the home side specifically selected for non-interference with league games. After the fourth round, no new teams are introduced, leading to a quarterfinal round in July, a semifinal round in August, and a final match to determine the champion in September. Every match, including the final, lasts 90 minutes plus any additional stoppage time. If no clear winner has been determined after 90 minutes of normal time, 30 minutes of extra time is played. If the score is still level after extra time then the winner is decided by a penalty shoot-out. Qualification Through the 2011 edition, eight teams from each level of the American Soccer Pyramid took part in the competition proper, with each league narrowing its delegation separately in the spring before the competition officially began in the summer. In some cases, additional teams played in qualifying rounds to gain entry. One example was found with MLS clubs, as only the top six from the previous regular season received automatic bids, while the bottom U.S.-based MLS teams faced each other to qualify for the remaining two MLS slots. Beginning in 2012, the competition was expanded from its previous 40 teams to 64, with the qualifying process radically changed. The National Premier Soccer League received six places, plus the possibility of a seventh in a playoff against a team from the amateur US Club Soccer setup. Nine clubs from the USASA earned places, as did 16 USL Premier Development League teams. Each of these organizations has its own qualifying process to determine its entrants. These 32 teams competed in the first round of the Cup, with the winners meeting all 16 USL Pro and NASL teams in the second round. The 16 U.S.-based MLS teams entered in the third round. In 2013 the competition was expanded to 68 teams. All U.S.-based Division I, II and III teams participated in the tournament proper: 16 from Major League Soccer, six from the North American Soccer League