Clue: Randy Scots, reverse of sober after contact sport (5)
Answer: RUDAS
Explanation: Definition: Randy Scots
RU + SAD< – another Scotticism:"a foul-mouthed old woman; a randy; a hag", where presumably "randy" has the sense "a violent beggar, esp, a woman; a coarse virago", which Chambers gives under the same heading as the more familiar sexual sense