for under-21s. The former competition was widened to include under-19s in 2003. Rangers were removed from the under-19 league after the club's demotion to the Scottish Third Division in 2012, with youth players featuring in the 2012-13 SFL Reserve league instead. The formation of the Scottish Professional Football League in the 2013–14 season, saw the formation of an under-20s league with the number of teams increased to 16 and teams were allowed to field two over-age outfield players and an overage goalkeeper. The league was renamed the SPFL Development League in 2014, with the number of teams increased to 17. Rangers youth sides play in a number of cup competitions including the Glasgow Cup and Scottish Youth Cup. From 2015 onwards it is also possible for the Academy to participate in the UEFA Youth League by the Under-18 side winning the previous season's league at that age level, or by the senior team reaching the UEFA Champions League group stages; this was achieved in 2019 via the first route. In the 2019–20 UEFA Youth League, Rangers defeated BSC Young Boys of Switzerland in the opening round on away goals after a 5–5 result on aggregate, and eliminated Slovakians Slovan Bratislava 4–1 in the next. In June 2016, it was announced by the SPFL that the Challenge Cup would be expanded to include teams from the Welsh Premier League, Northern Irish Premiership and an Under-20s side from each Scottish Premiership club. In the 2016–17 edition, Rangers U20 won their opening tie against Stirling University F.C. of the Lowland League but lost in the next round to Stenhousemuir of the third level. In the 2019–20 edition, they travelled to Northern Ireland and defeated Ballymena United who had been NIFL runners-up in the previous season, then knocked out Solihull Moors of the English National League, again away from home, this time on penalties. In the quarter-finals, they beat Wrexham from the same league at Ibrox, with many of the same players also involved in a 5–0 win over Celtic in the Scottish Youth Cup a few days earlier and in the Youth League victory over Slovan ten days later. They were drawn away to Inverness CT in the semi-finals, meaning the Wrexham match would be their only home fixture in the competition, with two ties in England, one in Northern Ireland and one in the Scottish Highlands from Glasgow. They lost 2–1 to