Aged 17, Rae was part of the all conquering Ayr team of 2012–13 that won the Premier League, Scottish Cup and the Bill McLaren Shield, a unique treble that had only been achieved previously by Heriot's RFC.
[4] He made his competitive debut for Glasgow Warriors on 6 February 2015 against Munster at Thormond Park.
[5] On 9 April 2015 he joined London Scottish on loan till the end of the 2014–15 season and played against Nottingham, Rotherham Titans, Leeds Carnegie and then experienced playing in the Championship playoff semi finals home and away against the eventual winners Worcester Warriors.
[8] Rae has represented Scotland at under-17, under-18 and has been capped 18 times at under-20 having played in two Junior World and two Six Nations Under-20 Championships.
[9] During the 2014 Junior World Championship held in New Zealand Scotland had to make a powerful second-half comeback to beat their Italian counterparts during which D'arcy Rae made a magnificent break, charging a good 30-meter, to cross for the third score that sealed the victory that ensured Scotlands participation at the elite level in 2015.