[3] Haddin was selected in the first ever Mercantile Mutual Cup season of 1997–98 for the ACT Comets, with whom he began his professional cricketing career.

He was demoted from second choice wicket keeper for Australia in 2001 by Wade Seccombe and later Ryan Campbell, but reclaimed this position in late 2004.

[9] On 18 September 2006, playing against West Indies at Kuala Lumpur in the DLF Cup, Haddin and Australian captain Mike Hussey put on 165, which at that time was a world-record stand for the sixth wicket in ODIs.

Haddin was involved in a controversy relating to the dismissal of Neil Broom in an ODI between Australia and New Zealand in Perth in February 2009.

New Zealand captain Daniel Vettori expressed his dissatisfaction with Haddin's actions in not calling Broom back to the wicket.

[12] On 15 February 2009, Haddin became acting Australian captain for the Twenty20 against New Zealand after Ricky Ponting was rested and Michael Clarke was injured.

On 9 March 2010, in the third match of the 2009–10 Chappell-Hadlee One Day International series against New Zealand, Haddin scored his second ODI hundred, hitting 110 off 121 balls opening the Australian innings.

[13] He was ruled out of the 2010 ODI series in England due to an elbow injury, which he claims flared up when he smashed that century against New Zealand in March.

He was dropped for Australia's Twenty20 series against England in January 2011 in favour of Tim Paine, a decision which Haddin said had left him "confused".

[24] On 15 December 2014, with Cricket Australia pursuing "a longer-term view" in regards to the leadership of the Test Team, a 37-year-old Haddin was replaced permanently as vice-captain by Steve Smith.

[28] He wrote an autobiography entitled My Family Keeper (2013) about his life and his daughter's fight with a form of cancer called neuroblastoma.