Scotland second row Gregor Brown has been called up to the British and Irish Lions ' tour of Australia amid concerns over the fitness of Joe McCarthy. Brown joins Andy Farrell 's squad in Melbourne on Sunday to provide cover for Tuesday's final midweek match against a First Nations and Pasifika XV, which is sandwiched by the first and second Tests.

Here is everything you need to know as the British and Irish Lions face the Wallabies in the first of a three-Test series.

Although ifs and buts are futile in the unforgiving world of Test rugby union, Australia must cling to the hope of rebounding next weekend at the Melbourne Cricket Ground to force a decider.