Collin Morikawa knew he had four days at East Lake to make up a nine-shot deficit in the Tour Championship. He wound up doing it in one day, with a little help from Scottie Scheffler. Morikawa started the FedEx Cup finale at 1-under par because he was 24th in the standings. Scheffler began at 10 under as the top seed. And then Morikawa shot a 61. Now he’s tied for the lead with Keegan Bradley and Viktor Hovland. Scheffler shot 71 and is one shot behind. Sixteen players are separated by four shots. All are chasing the $18 million bonus.