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
Celtic F.C. league record by opponent Celtic F.C. league record by opponent Celtic Football Club is a professional association football club based Glasgow, Scotland. The club was founded in 1887 and began playing league football in 1890 as founder members of the Scottish Football League. Since their first season Celtic have remained in the top division of the Scottish football league system: the Scottish Football League (1890–93), Scottish Football League Division One (1893–1975), Scottish Football League Premier Division (1975–98), Scottish Premier League (1998–2013) and Scottish Premiership (2013–present). As of 2017–18 the club has completed 129 seasons of competitive football and have been Scottish football champions 49