Ka dib markii uu ka fariistay dhamaadkii xilli ciyaareedkii 2018/2019, ka dib markii uu xoogaa caafimaadkiisa soo fiicnaaday, wuxuu ku soo laabtay oo ku tartamay qaar ka mid ah heerka labaad, Challenge Tour. Muir oo hadda ah hiwaayad, wuxuu awooday inuu galo Masters-ka Yurub ee 2020
, laakiin waxaa laga badiyay wareegii koowaad ee isreebreebka Kurt Maflin, 5<unk>2. Muir wuxuu gaadhay semi-finalka 2020 WSF World Championship ee Malta iyo EBSA European Championship ee Portugal.