When that will be is yet to be determined, but McCann said he had only a "minor headache" on Tuesday, two days after sustaining a mild concussion during a nasty home-plate collision with the Phillies' Shane Victorino.
"I know they're not going to put me out there unless I'm 100 percent," said McCann, who did not venture outside the Braves' clubhouse for the second straight day. "Even if I feel good, when you mess with the head and take one more blow when I'm not 100 percent, it's something way more serious."
But McCann said he is improving. He arrived at Turner Field on Monday with a sore neck and jaw, but that discomfort is no longer present, replaced by a slight headache that he hopes will dissipate in the next day or two.
"I'm hoping this is a couple-day thing and not anything longer than a week, max," said McCann, who was momentarily knocked unconscious during the helmet-to-helmet collision on Sunday.
McCann is batting .302 with 20 homers and 63 RBIs this season. In the 13 games prior to his injury, the three-time All-Star was hitting .390 with a .545 on-base percentage.
Ryan Lavner is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.