Pursuit day at the Tour de Ski. Fifty-one skiers chased the yellow Tour de Ski leaders bib of Norway’s Therese Johaug during Stage 4, a 10-kilometer classic pursuit. Start times for the day’s pursuit were based on time back in Stage 3, a 10 k interval start skate. Johaug started first, with Norwegian teammate Ingvild Flugstad Østberg, 0.1 seconds back. A few skiers raced off with a small enough time deficit to dream of making...