Commens was named head coach of the Belgium national field hockey team on 4 July 2007.

When he took over as coach, he dropped five experienced players from the national squad: Kate Hollywood, Fiona Johnson, Alison Bruce, Shelly Liddelow and Amy Korner.

It is alleged he exposed himself and made lewd remarks to a group of Hockeyroos during celebrations after attending the hockey finals at the Olympics.

[2] Since the Rio Olympic Games, Commens has been appointed as the High Performance Director of the Belgian Hockey Federation and won Belgium's first ever World Cup in 2018.

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