As referee: Leifur Sigfinnur Garðarsson (born 23 February 1968) is an Icelandic former basketball referee, multi-sport athlete and football manager.
[1] During the 1991 Úrvalsdeild karla playoffs, Leifur was hit by a fan and threatened violence following a match between bitter rivals Njarðvík and Keflavík.
[2][3] He retired from refereeing in 2004 to focus on furthering his football managing career[4] but returned in 2013.
[6] Source Leifur played several seasons in the Icelandic top-tier Úrvalsdeild karla with Fimleikafélag Hafnarfjarðar and Þór Akureyri.
[8] He was the manager of Fylkir from 2006 to 2008 and Knattspyrnufélagið Víkingur from 2008 to 2011.