[1] Horvath played college basketball at Duke University from 1999 to 2004, where he was a part of the 2000–01 NCAA championship team.
On September 2, 2005, Horvath dislocated his kneecap in the Razorbacks' season opening loss to the Townsville Crocodiles and subsequently missed three months of action.
[5][6][7] On October 25, 2007, Horvath was replaced in the Razorbacks' squad by Bakari Hendrix following the Dragons' 0–6 start to the season.
[8][9] However, despite this, he was not released by the Dragons and continued to train with them for the rest of the season, waiting to see if he'd receive his New Zealand citizenship to be able to play as a local instead of an import.
After winning the championship with the South Dragons, Horvath disappeared from the basketball scene in 2009, citing mental and physical exhaustion.
[18] On January 14, 2015, Horvath signed a short-term deal with the Sydney Kings to replace the injured Angus Brandt.
[22] In April 2016, Horvath announced his retirement from the game due to a combination of injury, family commitments and the Manawatu Jets pulling out of the NBL.
[23] In 1998, Horvath helped lead USA to a gold medal at the World Youth Games in Moscow.
[24] Horvath earned the naturalised spot on the New Zealand Tall Blacks squad to compete in the 2008 Olympics Qualifying Tournament.