Answer by taking a quote from the following article:

Vitali Volodymyrovych Klitschko (; Ukrainian: Vitalii Volodimirovich Klichko, [vi'taljij klItS'ko]; born 19 July 1971) is a Ukrainian politician and former professional boxer. He currently serves as Mayor of Kiev and head of the Kiev City State Administration, having held both offices since June 2014. Klitschko is a former leader of the Petro Poroshenko Bloc and a former Member of the Ukrainian Parliament. He became actively involved in Ukrainian politics in 2005 and combined this with his professional boxing career until his retirement from the sport in 2013.

On 21 March 2009, Klitschko defeated Juan Carlos Gomez by TKO in the ninth round. Gomez tried to use his movement to thwart Vitali, but seemed unable to cope with the power and physical strength of his opponent. As the rounds progressed, Klitschko began imposing himself on Gomez more and more. Gomez soon became wary of Klitschko's power and also began to tire physically. By the sixth round, Vitali was in total control. The end came when the referee stopped the fight in the ninth round as Gomez appeared unable to withstand any more hits.  On 26 September, Klitschko earned a one-sided TKO victory over Chris Arreola at the Staples Center in Los Angeles when Arreola's trainer, Henry Ramirez, asked the referee to stop the fight. Arreola was considered at the time one of the division's hardest punchers; however, Klitschko kept Arreola at bay with his left jab and hit him almost at will with his right. Arreola had been influenced by Samuel Peter's defeat to Klitschko in 2008, in which Peter had tried to box from the outside. He therefore employed a game-plan which involved applying constant pressure to Vitali in order to force him into a high tempo fight. Despite his best efforts, the bout became one sided very quickly. Klitschko consistently proved himself faster, sharper and much fitter than Arreola.  On 12 December, Vitali defeated Kevin Johnson by unanimous decision, winning almost every round. Johnson, a skillful fighter, tried to negate Klitschko's strength with angles and head movement. Though he proved hard to hit, he failed to launch any sustained attack of his own. After the Johnson bout, Klitschko's camp began negotiations for a potential fight with former WBA Champion Nikolai Valuev, but the match failed to materialize due to economic disagreements.

What was the result of that fight?
On 21 March 2009, Klitschko defeated Juan Carlos Gomez by TKO in the ninth round.