Jäger grew up in Vättis ( Canton St. Gallen ), where he still lives today. After finishing school, he began training as a commercial clerk at the Pfäfers municipal administration . He later graduated from the border guard school in Basel . He ran his first cross-country world cup race in February 2006 in Davos , which he finished in 23rd place in the sprint and was thus able to win his first world cup points. At the Swiss championships in 2008 he won the silver medal in the sprint. In the 2008/09 season he came in the points three times in World Cup sprints. In January 2009 he achieved his first top ten placement in the World Cup with ninth place in the sprint in Rybinsk . At the Nordic World Ski Championships in Liberec in 2009 , he finished 35th in the sprint. In the following year he won the silver medal in the sprint at the U23 World Championships in Hinterzarten and achieved his only podium finish in the cross-country alpine cup with third place in the sprint in Campra . In the 2010/11 season he achieved fourth place in the sprint in Rybinsk, his best individual result in the World Cup. At the Nordic World Ski Championships in Oslo in 2011 , he finished 11th in the sprint. In the following season he came into the points five times in the World Cup and at the end of the season he finished 69th in the overall World Cup and 31st in the Sprint World Cup. At the Swiss Championships in 2012 and 2014 , he was champion with the relay. After the 2013/14 season he switched to biathlon. He started in the IBU Cup in the 2014/15 season . His best result was 25th place in the sprint race in Canmore . At the 2015 European Biathlon Championships in Otepää , he finished 46th in the individual. At the beginning of the following season he ran in Östersund for the first time in the biathlon World Cup , which he finished in 75th place in the sprint. In the further course of the season he got his first and so far only World Cup points in Presque Isle with the 40th place in the sprint. At the 2016 Biathlon World Championships in Oslo, he took 48th place in the sprint and 55th place in the subsequent pursuit.
statistics
Cross-country skiing
World Cup placements
The table shows the placements achieved in detail.
1st – 3rd place: Number of podium placements
Top 10: Number of places in the top ten
Points ranks: Number of placements within the point ranks
Starts: Number of races run in the respective discipline
Note: In the distance races, the classification is based on the FIS.