Stocklasa had been linked with a move to English club Leeds United, prior to his joining SV Ried.

[2][4] He made his international debut for Liechtenstein in their 5–0 defeat to the Republic of Ireland in a 1998 FIFA World Cup qualifier on 31 August 1996.

[6] On 1 March 2023, it was announced that he cancelled his contract with the Liechtenstein Football Association to join FC Vaduz.

Under Stocklasa, Vaduz were able to stabilise, losing only three of the remaining 15 games of the season, finishing in eight place with a 13 point buffer on the relegation play-off spot.

He also oversaw Vaduz's elimination in the first round of UEFA Europa Conference League qualifying, losing 3–2 on aggregate to Belarusian side FC Neman Grodno.