NASSAU, Bahamas—Tiger Woods joined the broadcast booth for his Hero World Challenge, and what he saw from Collin Morikawa must have looked familiar. Morikawa carved up Albany Golf Club to build a five-shot lead Saturday over Brooks Koepka, and too many pursuers faded from contention with a series of mistakes that only made another victory look inevitable for Morikawa. With an 8-under 64—the first bogey-free round of the week—Morikawa took a big step toward reaching No. 1 in the world. “You love being in these spots and you don’t get them every week,” Morikawa said. “You wish you did. But when you do, you want to take advantage of them. So hopefully, we can take advantage tomorrow.” Morikawa chipped in for eagle on the par-5 third hole. His 10-foot birdie putt on the ninth hole gave him the lead. And then he shifted into another gear with a series of …