Newcomb said he saw that his tweets had resurfaced on social media when he looked at his phone shortly after Sunday’s game.
“I just felt it would be good to kind of address it right away,” he said.
Newcomb’s teammates had left the stadium by the time he discussed the issue with the media.
“I think people that know me know that’s not the kind of person I am,” Newcomb said.
The Braves released this statement: "We are aware of the tweets that surfaced after today's game and have spoken to Sean, who is incredibly remorseful. Regardless of how long ago he posted them, he is aware of the insensitivity and is taking full responsibility. We find the tweets hurtful and incredibly disappointing. ... We will work together with Sean toward mending the wounds created in our community."
Major League Baseball also issued a statement: "Such inappropriate comments have no place in our game. We are aware of this serious issue. (MLB vice president for social responsibility and inclusion) Billy Bean will meet with Mr. Newcomb this week, and we will identify an appropriate course of diversity training for him in the Atlanta community."