Individual event world champions Lisa Vittozzi and Johannes Thingnes Bø added the discipline’s World Cup trophies on Friday even though the race wins in Oslo went to others. Italy’s Vittozzi finished fourth in the women’s 15km at the famous Holmenkollen venue where Norway’s Ingrid Landmark Tandrevold took a home victory in a strong comeback from her recent world championship debacle. The men’s race saw a Norwegian podium sweep led by Sturla Holm Lægreid, while fifth place for team-mate Bø was good enough to clinch the 20km trophy. Tandrevold beat Sweden’s Elvira Öberg by 28.8 seconds. Ida Lien…