1:32
The number of teams that start the tournament. The four play-in games (which give the winners access to the field of 64) were introduced in 2011. Click here to print out a full bracket.
Number of teams to start the second round, which begins Thursday. The tournament was expanded to 64 teams in 1985.
Number of schools that receive at-large bids as decided by an NCAA selection committee.
Number of Division I conferences that receive automatic bids, a decision made the Sunday prior to the start of the tournament.
Seven times that a team seeded 15th defeated a No. 2 seed in the opening round.
Number of titles won by UCLA, the most of any school.
The Big 12 set the record for highest percentage of teams from a conference in a single season. Nine of the league's 10 schools made the Top 25 (Texas Tech was the one that did not) -- a 90 percent mark that shattered the previous record of 78 percent set by the Big East in 1991. That year seven of its nine teams were ranked.
With the No. 7 seed Connecticut and No. 8 Kentucky reaching the championship game in 2014, last year's title match-up was the first ever to not include at least one 1, 2 or 3 seed.
It was also the third final all-time to not feature a No. 1 or 2 seed. UConn was the first No. 7 seed to ever reach (and win) the championship game.
Number of times (2008, 2010, 2011, 2012 and 2013) that Georgetown lost to a team seeded at least five spots below it.
Number of times all four No. 1 seeds made it to the Final Four. It last happened in 2008.
Number of times a No. 1 seed has lost to a No. 16 seed. Could it happen this year?
Get real-time updates as this story unfolds. To start, just \"star\" this story in ABC News' phone app. Download ABC News for iPhone here or ABC News for Android here.
","canonicalUrl":"https://abcnews.com/Sports/march-madness-2015-guide-ncaa-tournament/story?id=29641089","legacySlug":"/living/story/march-madness-2015-guide-ncaa-tournament-29641089","noIndexNoFollow":false},"publishTime":"11:11","publishDate":"03-17-2015","updatedTime":"19:21","updatedDate":"03-17-2015","socialImage":{"alt":"Andrew Harrison of the Kentucky Wildcats shoots the ball against the Arkansas Razorbacks in the championship game of the SEC Basketball Tournament on March 15, 2015 in Nashville, Tenn. ","credit":"Andy Lyons/Getty Images","ratio":"16x9","url":"https://s.abcnews.com/images/Sports/gty_wildcats_2_kb_150316_16x9_1600.jpg","width":992,"height":558},"datePublished":"3/17/2015 11:11:00 GMT","video":{"live":false,"id":29641089,"headline":"AC","mediaAssetTitle":"LISI_NCAA_Guide","description":"Why the numbers 68, 64 and 0 are important to college basketball. ","duration":"1:32","posterImg":{"url":"https://s.abcnews.com/images/GMA/default-img-undefined.png","width":608,"height":342},"video":{"feed":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/i/abcnews/2015/03/150316_gma_holmes1_749_,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8"},"playlist":["132055565","131830882","130993584"]},"relatedItems":[{"contentType":"video","date":"April 15, 2026","headline":"American influencer found dead in Tanzania","section":"News","slug":"/video/132055565","id":"132055565","image":{"alt":"VIDEO: American influencer found dead in Tanzania","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: American influencer found dead in Tanzania","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_1600.jpg"}}]}},{"contentType":"video","date":"April 8, 2026","headline":"Ceasefire analysis, unanswered questions ahead","section":"News","slug":"/video/131830882","id":"131830882","image":{"alt":"VIDEO: Ceasefire analysis, unanswered questions ahead","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: Ceasefire analysis, unanswered questions ahead","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_1600.jpg"}}]}},{"contentType":"video","date":"March 12, 2026","headline":"Winter whiplash plunges temperatures along the East Coast","section":"News","slug":"/video/130993584","id":"130993584","image":{"alt":"VIDEO: Winter whiplash plunges temperatures along the East Coast","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: Winter whiplash plunges temperatures along the East Coast","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_1600.jpg"}}]}}],"relatedContentSection":"news","schemaContent":{"name":"AC","description":"Why the numbers 68, 64 and 0 are important to college basketball. ","duration":"1:32","uploadDate":"03-17-2015","publication":"03-17-2015","images":"https://s.abcnews.com/images/GMA/default-img-undefined.png","url":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/i/abcnews/2015/03/150316_gma_holmes1_749_,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","contentUrl":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/i/abcnews/2015/03/150316_gma_holmes1_749_,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","link":"https://www.goodmorningamerica.com/news/story/march-madness-2015-guide-ncaa-tournament-29641089"}},"playlist":[{"id":"132231169","contentType":"story","section":"news"},{"id":"132206748","contentType":"story","section":"news"},{"id":"132200241","contentType":"story","section":"news"},{"id":"132054443","contentType":"story","section":"news"},{"id":"132054798","contentType":"story","section":"news"},{"id":"132033010","contentType":"story","section":"news"},{"id":"131912713","contentType":"story","section":"news"},{"id":"131830583","contentType":"story","section":"news"},{"id":"131834976","contentType":"story","section":"news"},{"id":"131554765","contentType":"story","section":"news"},{"id":"131554815","contentType":"story","section":"news"},{"id":"131543053","contentType":"story","section":"news"},{"id":"131432442","contentType":"story","section":"news"},{"id":"131121474","contentType":"story","section":"news"},{"id":"131247079","contentType":"story","section":"news"},{"id":"131228784","contentType":"story","section":"news"},{"id":"131178806","contentType":"story","section":"news"},{"id":"131142257","contentType":"story","section":"news"},{"id":"131046664","contentType":"story","section":"news"},{"id":"131048076","contentType":"story","section":"news"}],"kvps":{"pgtyp":"article","lang":"en","sp":"goodmorningamerica","programmatic":"true","bundleId":"com.abcnews"}},"analytics":{"accountID":"wdgnewwdgnewgmaweb","ns":"gma","pageName":"gma:news:video","pageType":"video","globalSpecVersion":"v1.08","siteDifferentiator":"gma:site","tagID":"g_page01","userABCookie":"0","section":"news","title":"AC","pubTime":"07:11","pubDate":"03-17-2015","modTime":"15:21","modDate":"03-17-2015","taxonomyTags":"none","id":29641089,"editorialOtherSubjects":"","wordCount":"none","columns":"none","authors":"","authorsUnit":"none","authorsBureau":"none","subBrand":"Good Morning America","provider":"Good Morning America","videoName":"AC","mediaAssetTitle":"LISI_NCAA_Guide","videoId":29641089,"mediaOnPage":"video","legacySlug":"/living/story/march-madness-2015-guide-ncaa-tournament-29641089"},"taboola":{}},"request":{"headers":{},"httpVersion":"1.1","method":"GET","url":"/video/29641089","vary":{"host":"www.goodmorningamerica.com","cached":true,"path":"/video/29641089","forwarded-proto":"https","device":"desktop","userab":"0"}},"viewport":{"width":1260,"height":0},"user":{}};