Career
He is a Hauptfeldwebel (Sergeant First Class) in the German Bundeswehr. Groß started out as a cross-country skier but switched to biathlon at the age of 13. He made his World Cup debut at the age of 20.
His first club was the SG Dynamo Klingenthal until 1991.
In the Biathlon World Cup of 1997/1998, he came second in the overall competition. He took a total of eight Olympic medals during his career, including four relay golds.
Groß took a total of 53 individual podium finishes in World Cup competition, including nine race wins. After retiring from competition Groß settled in Ruhpolding.
He has worked as a commentator on biathlon for German television and was appointed as coach of the German women"s biathlon team in 2010.
He was subsequently announced as senior trainer for the German IBU Cup team in April 2014. In August 2015 he became a senior coach for the Russian men"s biathlon squad, agreeing a contract up to the 2017-2018 season. All results are sourced from the International Biathlon Union.
Olympic Games
8 medals (4 gold, 3 silver, 1 bronze)
*Pursuit was added as an event in 2002, with mass start being added in 2006.
World Championships
20 medals (9 gold, 5 silver, 6 bronze)
*During Olympic seasons competitions are only held for those events not included in the Olympic program **Team was removed as an event in 1998, and pursuit was added in 1997 with mass start being added in 1999 and the mixed relay in 2005.
Individual victories
9 victories (3 In, 1 Sp, 4 Pu, 1 Mississippi).