Michael Katsidis

Since 2017, Katsidis has been focusing on training the public and helping troubled teens across the Gold Coast. Katsidis also actively supports Australian Men's Health charities and in the future wants to start public speaking.

Both boxers would go on to wage an intense, bloody war over the twelve-round distance. Amonsot proved to be a tough and durable opponent, despite suffering knockdowns in rounds two and ten. The judges' scorecards ultimately read 116–110, 115–111 and 114–112 for Katsidis, but both men were subsequently hospitalised at the local Valley Hospital Medical Center, with Amonsot requiring an overnight stay and Katsidis multiple stitches for serious cuts around his eyes, which had begun to bleed heavily from the third round onwards. Amonsot was later found to have a subdural hematoma, putting his career in serious doubt at the time.

Following the defeat, a rescheduled fight with Juan Díaz was set for 6 September at the Toyota Center in Houston, Texas for the vacant IBO lightweight championship. Over the course of twelve rounds, Katsidis underperformed and enabled a determined Díaz (who had himself suffered a career first loss in his previous fight) to counterpunch and time his attacks with regularity. His face bloodied and bruised once again, Katsidis suffered his second consecutive defeat, with Díaz winning a split decision. Two of the judges scored the fight 116–112 and 115–113 for Díaz, while the third scored it a somewhat controversial 115–113 for Katsidis.

An opportunity for Katsidis to reclaim the vacant WBO Asia Pacific lightweight title was scheduled for 31 January at the Cebu Coliseum in Cebu City, Philippines, with Angel Hugo Ramirez as his opponent. The ten-round contest was won convincingly by Katsidis, despite appearing to be gunshy at times, coupled with Ramirez's unwillingness to engage. Ramirez was knocked down four times (once in the second round and three times in the fourth), while a point was deducted from Katsidis for hitting Ramirez when he was floored from a slip later in the second round. At the end of the fight, the judges scored 98–87, 96–89 and 96–89 in favour of Katsidis.

In a fight similar to the one with Amonsot two years prior, Katsidis and Escobedo exchanged hard punches for the full twelve rounds, with Katsidis surging forward aggressively and putting constant pressure on the retreating yet accurately counterpunching Escobedo. As per routine, cuts opened up around Katsidis' face early on, together with a visibly swollen jaw in the closing rounds. At the end of the contest, the judges were split with 118–110 and 115–113 for Katsidis and 116–112 for Escobedo.

In the second round, Katsidis seemingly scored a knockdown due to a cuffing left hook, but this was not counted by referee Russell Mora. In the fourth, both fighters exchanged punches wildly, with Guerrero maintaining the upper hand. A hard straight left from Guerrero wobbled Katsidis in round five and had him hurt for the remainder of the round. As the fight wore on, Katsidis would lose two points in the eighth round because of repeated low blows; Guerrero also lost a point for the same reason in the ninth. With all twelve rounds completed, the judges were unanimous in scoring 118–107, 118–106 and 117–108 for Guerrero.

In a move back down to lightweight, Katsidis next fought Ricky Burns for the vacant WBO interim lightweight title. The event took place at the Wembley Arena in London on 5 November, making it Katsidis' third fight in England. Burns defeated Katsidis by way of unanimous decision with judges' scores of 117–112, 117–111 and 117–111.

Katsidis' first bout of 2013 was scheduled for 21 February at the Melbourne Pavilion, against Weng Haya of the Philippines. However, on 12 February the news broke that the fight had been cancelled, with Katsidis having received medical advice based on MRI and CAT scans that he should retire. A week following the announcement, further information from the scans revealed that Katsidis had suffered scarring of the brain.

Having hired a new trainer in fellow Australian and former heavyweight contender Justin Fortune, Katsidis moved up light-welterweight again for a fight against Albert Mensah, which took place on 13 April 2012 at the Hard Rock Hotel and Casino in Las Vegas. Despite throwing over a thousand punches in a typically action-packed outing, Katsidis was outboxed by Mensah, who landed fewer but more damaging punches (particularly the uppercut, to which Katsidis has always been vulnerable). In the ninth round, Katsidis was hurt several times and looked to be on shaky legs as he stumbled around the ring. At the end of the ten-round contest, the judges scored a majority decision for Mensah with scores of 98–92, 96–94 and 95–95.

Katsidis' next fight took place on 9 April 2011 against Robert Guerrero, in a rescheduling of their cancelled fight from March 2010. Staged at the MGM Grand, it formed part of the pay-per-view undercard to Érik Morales vs. Marcos Maidana. The WBA and, once again, WBO interim titles were at stake. Despite an animated taunt of "What are you looking at?!" from Katsidis to Guerrero during their pre-fight staredown, a fourth career defeat would await Katsidis in his most one-sided to date. Guerrero was able to maintain a safe distance by consistently landing accurate punches with his jab and straight left hand, to which Katsidis had virtually no answer at any stage in the fight.

Having reclaimed the interim title, Katsidis was made to wait several months to see if a mandatory title bout with Juan Manuel Márquez would materialise. This was dependent on whether Márquez was willing return to the lightweight division to defend his WBO championship, or if he would voluntarily relinquish it to Katsidis in favour of moving up to light-welterweight for potentially bigger fights. By January 2010, Márquez had not yet expressed any desire to defend against Katsidis.

In what many observers were anticipating to be a highly fan-friendly fight, Márquez suffered a knockdown in round three from a hard Katsidis left hook. He managed to recover swiftly, building up a lead on all the judges' scorecards and gradually neutralising Katsidis' aggression with accurate counterpunching at close range. In the ninth round, Márquez landed a succession of cleanly landed uppercuts on an unsteady Katsidis (who had already been staggered by an uppercut in the eighth), prompting referee Kenny Bayless to step in and halt the fight. Despite a third defeat for Katsidis, the fight went on to win HBO's award for 2010 Fight of the Year.

His brother Stathi Katsidis was one of Australia's most prominent jockeys. On 19 October 2010, Stathi was found dead at his home in Brisbane.

Immediately after the Mitchell bout, the WBO mandated that Juan Manuel Márquez must face Katsidis for the 'full' version of the lightweight world championship, or risk being stripped. This was reiterated some months later, following Márquez's victory over Juan Díaz in a rematch of their 2009 fight. Katsidis was in attendance for the aforementioned event in order to scout out the winner and primarily to assert his claim to be next in line against Márquez.

In February 2009 Katsidis married Japanese native Kumiko Hosako during a ceremony in Bangkok. On 8 December 2009 she gave birth to a daughter. In May 2015 Katsidis and Kumiko Hosako divorced.

On 17 February 2007, a bout for the newly created and vacant WBO interim lightweight title was made between Katsidis and Graham Earl at the Wembley Arena in London. In an action-packed and fast-paced fight, Katsidis and Earl went toe-to-toe and traded many heavy blows, during which Earl was knocked down twice in the opening round and again in the second. However, soon after getting back to his feet following the third knockdown and having the towel being thrown in seconds later (only for it to be thrown back out again by referee Mickey Vann), Earl managed to floor Katsidis momentarily with a heavy right hand at close quarters, rendering the latter visibly stunned and unsteady on his feet. Earl's comeback would ultimately be short-lived, as Katsidis recovered swiftly and finished the round strongly. At the very end of round three, a low blow cost Katsidis a point, but in the following rounds he went on to deliver a barrage of largely unanswered punches to Earl until the decision was made Earl's cornermen to stop the fight after the fifth round.

Katsidis was scheduled to face then-WBO super featherweight champion Joan Guzmán on 26 May 2007, but the latter withdrew from the fight due to a hand injury. Katsidis later defended his WBO interim lightweight title against Czar Amonsot on 21 July 2007 at the Mandalay Bay Events Center in Las Vegas, Nevada. This was Katsidis' first fight in the United States, as well as the first of his many appearances on the HBO network, as part of the pay-per-view undercard to Bernard Hopkins vs. Ronald "Winky" Wright.

A rematch with Graham Earl, whom Katsidis first fought in 2007, took place on 4 July in Toowoomba, at light-welterweight. Katsidis won a unanimous decision with scores of 120–109, 120–108 and 119–109.

Katsidis then moved up to light-welterweight for a fight against Michael Lozada on 13 August at the Gold Coast Convention and Exhibition Centre in Queensland. It was his first fight in Australia since 2006, as well as his first at light-welterweight since that time. An outmatched Lozada was stopped in the third round.

In July, Katsidis expressed his desire for a farewell fight in his hometown of Toowoomba, where he had not fought since 2006. He also stated that he was clear to fight, while having other aspirations outside of boxing. In October, it was at one point confirmed that Katsidis would face Stephen Foster on 11 December at the Sydney Entertainment Centre, but for unknown reasons this did not take place on the date.

Katsidis made his professional debut on 1 December 2001 by stopping Danny Wilson in the third round for the Queensland lightweight title. In his second fight on 9 March 2002, he won a twelve-round unanimous decision over James Swan for the Australian lightweight championship. He would go on to score another nineteen wins, nearly all by knockout, while amassing a further three lower-level titles: the Australian light-welterweight, WBO Asia Pacific lightweight and IBF Pan Pacific lightweight championships, respectively.

In 2001, Katsidis was convicted for assault after getting involved in an altercation with a man and breaking his jaw. Katsidis pleaded not guilty, maintaining self-defence, but was sentenced to eight months in prison between 2002 and 2003, six months of which were spent at the high-security Woodford Correctional Centre north of Brisbane. The conviction later made it difficult for Katsidis to obtain a visa to the United States, which was refused twice in 2005 and 2006.

In an amateur career which began at the age of 11, Katsidis compiled a record of 75 wins and 6 losses. During this time he represented the Australian Olympic team in the lightweight division at the 2000 Olympics in Sydney. He also attained a scholarship at the Australian Institute of Sport.

Michael Alan Katsidis (/k æ t ˈ s iː d iː z / kat-SEE -deez; Greek: Μιχάλης Κατσίδης ; born 15 August 1980) is an Australian professional boxer. He held the WBO interim lightweight title twice between 2007 and 2010, and has challenged twice for the lineal lightweight title in 2008 and 2010. At the peak of his career in the late 2000s, Katsidis' crowd-pleasing and aggressive pressure fighting style often drew comparisons with the late Arturo Gatti.