FIS Nordic World Championships (Lahti, Finland): Women’s 30 k freestyle mass start Marit Bjørgen made it a four-peat on Saturday with her fourth gold and third individual win over the last week at 2017 Nordic World Championships in Lahti, Finland. (She previously won the 15-kilometer skiathlon, 10 k classic, and 4 x 5 k relay.) The 36-year-old Norwegian closed out the championships with a 1.9-second victory in the women’s 30-kilometer freestyle mass start, finishing in 1:08:36.8...