British Open has 5-way tie for the lead in fickle weather with Scottie Scheffler in the mix

PORTRUSH, Northern Ireland — Sunlight streaked through a few low-hanging clouds when Padraig Harrington opened the British Open with a piercing 3-iron into the wind. Darkness began covering Royal Portrush nearly 16 hours later Thursday night when the final group trudged off the 18th green.