Rubuta ci gaba don wannan sakin layi - McClatchey ya wakilci Scotland a Wasannin Commonwealth na 1974 a Auckland, New Zealand. A shekara ta 1975 ya yi iyo a Scotland a gasar cin kofin kasashe uku a Prague, Czechoslovakia da kuma gasar cin kofin kasashe takwas a Mallorca, Spain. Ya lashe lambar azurfa a Gasar Cin Kofin Duniya ta 1975 a Cali, Colombia a matsayin wani ɓangare na relay na Burtaniya 4 × 200 m tare da Gordon Downie, Brian Brinkley da Gary Jameson A cikin 1976, ban da lashe lambar tagulla a wasannin Olympics, ya karya bayanan Burtaniya na 400 m freestyle, 200 m butterfly da 400 m medley na mutum, na biyun yayin da yake iyo don Burtaniya a gasar cin kofin Turai a Italiya. Ya kuma yi iyo a Burtaniya a Gasar Cin Kofin Ruwa ta Turai ta 1977
a Jönköping, Sweden, ya lashe gasar zakarun Scotland bakwai da na Burtaniya bakwai a wannan shekarar kuma ya wakilci Scotland a wasan shekara-shekara na kasashe takwas. Ya wakilci Scotland a Wasannin Commonwealth na 1978 a Edmonton, Alberta, Kanada da kuma a wasa hudu a Netherlands a wannan shekarar. McClatchey ya sake wakiltar Scotland a gasar kasashe takwas a shekarar 1979, ya karya tarihin Scotland na yadin 100 na butterfly kuma ya yi iyo a Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin A cikin 1980 McClatchey ya yi iyo a Scotland a wasan ƙasashe takwas (a Royal Commonwealth Pool a Edinburgh) a karo na ƙarshe kuma ya wakilci Scotland a wasan ƙasa da ƙasa a Bremen, Jamus.