Australia

Campbell was inducted into the Australian Cricket Academy in 1994, and made his first-class debut for an academy team in April 1995, playing against the New Zealand Cricket Academy.^[10] His debut for Western Australia came in February 1996, during the 1995–96 season of the Mercantile Mutual Cup (the national one-day competition).^[11] Campbell initially played as a specialist batsman, with Adam Gilchrist serving as wicket-keeper. He did keep wicket on his Sheffield Shield debut (against Tasmania in November 1996), which came in Gilchrist's absence, but spent the remainder of the season as an opening batsman, partnering with Mike Hussey.^[10] Campbell was one of only three WA players to appear in every Sheffield Shield match during the 1996–97 season, and finished with 672 runs, behind only Mike Hussey and Justin Langer amongst his teammates.^[12] Against Victoria, he scored a maiden first-class century, making 113 runs from 106 balls. He brought up his century in only 86 balls, making it the fastest hundred of the season.^[13]

During the 1997–98 Sheffield Shield season, Campbell was again among the leading batsmen for WA, scoring 726 runs from eleven matches.^[14] He scored three centuries during the season, including 177 against New South Wales,^[15] and also kept wicket in four games while Adam Gilchrist was on national duty. In August 1998, Campbell was selected for Australia A for the first time, touring Ireland and Scotland with the team.^[10] Later in 1998, he also played for Australia A in a one-off day-night game against the senior Australian team, opening the batting with Michael Slater.^[16] Campbell made further appearances for Australia A the following year, all in the one-day format, appearing in three games against the touring Sri Lankans and a five-game series against India A, which was played at the Woodley Cricket Field in Los Angeles.^[11]

Campbell made career-best scores in both the first-class and one-day formats during the 1999–00 season, both of which came against Queensland. He made 203 from 222 balls in a Pura Milk Cup fixture at the WACA Ground, helping WA win by an innings and 257 runs,^[17] and later scored 108 runs from 85 balls in the final of the Mercantile Mutual Cup.^[18] Campbell finished the 1999–00 Pura Milk Cup with 885 runs from ten matches, which was the most for WA and behind only Matthew Elliott and Darren Lehmann overall.^[19] However, his output was much reduced the following season, as he struggled with a knee injury that eventually required surgery.^[20]

In January 2002, Campbell was selected to play for Australia in an ODI against New Zealand, after Adam Gilchrist withdrew from the team to spend time with his newborn son.^[21] He stumped Mark Richardson off the bowling of Shane Warne in New Zealand's innings, and later scored 38 runs from 52 balls opening the batting with Mark Waugh, eventually being dismissed by Daniel Vettori.^[22] Campbell made his second and final ODI appearance for Australia in December of the same year, against Sri Lanka. He again came into the team as a replacement for Gilchrist, who was suffering from groin and knee injuries.^[23] He batted lower in the order, at number six, and made 16 runs from 18 balls.^[24]

Campbell had been named in Australia's initial 30-man squad for the 2003 World Cup in South Africa, but did not make the final cut. He was one of four wicket-keepers in the initial squad, alongside Gilchrist, Brad Haddin, and Jimmy Maher, with Gilchrist and Maher eventually being selected for the World Cup.^[25] Campbell played his last matches for Australia A in April 2003, against South Africa A,^[10][11] and remained Western Australia's primary wicket-keeper until his retirement in January 2006, midway through the 2005–06 season.^[26]

India

In September 2008, Campbell signed with the Ahmedabad Rockets franchise for the second season of the Indian Cricket League (ICL), a BCCI-unsanctioned predecessor to the Indian Premier League (IPL).^[27] In his third game of the tournament, against the Mumbai Champs, he scored 92 not out from just 51 balls, and was named man of the match.^[28] Two games later, against the Royal Bengal Tigers, he scored another half-century, 66 not out from 35 balls.^[29] Campbell finished the season with 237 runs from eight appearances, which was behind only Murray Goodwin for his team.^[30] His strike rate of 160.13 was behind only Imran Nazir among players scoring 200 runs or more.^[31]

Hong Kong

Campbell first played in Hong Kong as early as 1997, when he represented Australia at the Hong Kong Sixes.^[32] In January 2016, after meeting the residency qualifications for Hong Kong, he was named in the national squad for the 2016 World Twenty20 in India.^[33] Aged 44, the oldest player at the tournament, Campbell played in all three of his team's matches (against Zimbabwe, Afghanistan, and Scotland), scoring 36 runs and taking two wickets.^[34] His best performance came against Afghanistan, where he scored 27 runs from 24 balls and took 2/28 from four overs.^[35]