Rubuta ci gaba ga wannan sakin layi - Gravell kuma ya buga wasanni 12 don gayyatar ƙungiyar yawon shakatawa Barbarians. An fara zaɓa a 1975, Gravell ya fuskanci Australia XV a farkon 1976 kafin ya shiga yawon shakatawa na Barbarian na Kanada daga baya a wannan shekarar inda ya buga wasanni shida. A shekarar 1977 Gravell ya buga wasan karshe na Barbarians a cikin tawagar da aka yi da tauraron da ke fuskantar dawowar 1977 British Lions
a wasan sadaukarwa don bikin Jubilee na Azurfa na Elizabeth II. Kodayake Gravell ya ƙare a kan ƙungiyar da ta rasa, ya zira kwallaye uku don Barbarians a cikin wasan da aka gani a matsayin haɗuwa ta al'ada.