He married fiancée Nerissa Vanderheyden on 14 December, just 63 days after the bombings. Throughout 2003, McCartney rehabilitated with the intention of regaining his place in the
Kangaroos on merit. Following an early season thigh strain, McCartney eventually played seven games with the Kangaroos' then-
VFL affiliate
Port Melbourne before gaining senior selection. On 6 June 2003, McCartney returned to the
AFL. Playing for the
Kangaroos against
Richmond, McCartney was heavily bandaged, wore a long-sleeved top and had to wear protective gloves. McCartney wore the numbers "88" and "202" on his guernsey—88 representing the number of Australians who died in the Bali bombing, and 202 the total number of deaths—with many in the crowd also holding up the numbers on signs. In the comeback game, McCartney had the modest statistics of 3 kicks, 1 mark, 1 goal, and 1 behind; however, these stats belied the impact he had on the game. McCartney came on as a substitute at full-forward to cheers from both sets of supporters; and, early in the fourth quarter, he took a mark inside the forward 50-metre line and kicked a goal from the resulting set shot to put the Kangaroos ahead by nine points. With two minutes remaining, and the Tigers subsequently having retaken the lead by three points, he also collected a bouncing pass inside the forward 50 and toepoked the ball through to
Leigh Harding, who finished the goal from close range to put the Kangaroos ahead again for good. North Melbourne eventually won with a score of 13.14 (92) to Richmond's 13.11 (89). The image of McCartney being chaired off the ground after the game is captured in Jamie Cooper's painting
the Game That Made Australia, commissioned by the AFL in 2008 to celebrate the 150th anniversary of the sport. In 2020, in an official YouTube video, the AFL ranked McCartney's comeback as the most memorable AFL moment at Docklands Stadium in its 20-year history, ahead of the likes of
Hawthorn's
Lance Franklin completing his 2008 100-goal season against
Carlton, and
Essendon's
James Hird's famous final-quarter heroics against the
West Coast Eagles in 2004. == Post-retirement ==