[1] He grew bored quickly and started to play truant until his mother met his coach, Marcela Moldovan, who revealed he had not trained for a while.

In the senior category, Nyisztor posted a quarter-finals finish at the 2001 European Championships in Koblenz after he lost to Russia's Pavel Kolobkov, then another at the 2002 edition, losing this time to Hungary's Gábor Boczkó.

[3] For his Olympic début, he defeated Ukraine's Bohdan Nikishyn in the preliminary round, but lost to Italy's Alfredo Rota in the table of 32.

This career high was followed by dry years: he did not reach the final table of 64 at the 2007 World Championships in St Petersburg and failed to qualify to the 2008 Summer Olympics.

In 2010, he left his club amid controversy that resulted from his behaviour at the Romanian national championship, where CSM Oradea lost their team title.