McGain made his first-class debut in 2002 against New South Wales at the Sydney Cricket Ground.

However, due to other Victorian spinners—Shane Warne and Cameron White—he was unable to hold down a place in the side.

[1] This led spin mentor Terry Jenner to suggest that McGain could be selected in the Australian Test team for the 2007–08 home series against India.

[3] He had to return home due to a shoulder injury after having only played in this one tour match.

[7] The South African batsmen targeted him for attack and hit many sixes from his bowling.