Celtic F.C. their sixth successive league title on 2 April 2017, with a record eight league games to spare. As Celtic's unbeaten domestic run continued, they subjected Rangers to their heaviest defeat at Ibrox since 1915, 5–1, on 29 April. Celtic's 2–0 win over Hearts on 21 May saw them finish 30 points ahead of second-placed Aberdeen in the league, with a record 106 points, and the team became the first Scottish side to complete a top-flight season undefeated since Rangers in 1899. On 27 May 2017, Celtic clinched their fourth treble by defeating Aberdeen 2–1 in the Scottish Cup final. The
Cwmbran Celtic F.C. season and enjoyed a 24 match unbeaten run. When they went to Risca Town for their last match of the season they were already promoted. In Division 2 Celtic consolidated their position in seasons 2007–08 and 2008–09. In season 2009–10 they were runners-up to Penrhiwceiber. In their first season in the 1st division, 2010–11, under new manager Ben Graham, Celtic struggled during the first half of the season and were firmly planted in the relegation zone but a superb run-in during which they won 7 and drew 3 of 14 games placed them safely in 12th place out of 16.