Roger Clemens has a message for anyone who said or posted they were leaving the country if and when Donald Trump won the 2024 election.

“Who ever said, ‘I’m leaving America if Trump wins’ … don’t let the door hit you in the a– on the way out,” the former Major League Baseball pitcher posted on “X,” the social media platform formerly known as Twitter.

He added, “This is massive for our great country!” Clemson, who pitched for the New York Yankees, Houston Astros and the Boston Red Sox, added he was “most proud of the people. We did it!”

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Clemens, a seven-time Cy-Young award-winner, lives in Houston.

Trump, meanwhile, spent his first day as president-elect receiving congratulatory phone calls from his defeated opponent, world leaders and President Joe Biden as he began the process of turning his election victory into a government.

Vice President Kamala Harris called Trump to concede the race and to congratulate him, while Biden invited the man he ousted from the White House four years ago to an Oval Office meeting to prepare to return the keys.

The White House announced that Biden had spoken to the president-elect and expressed his commitment to ensuring a smooth transition, while emphasizing the importance of working to bring the country together.

Biden also called Harris to salute her for her campaign. And Trump and Harris spoke on a call where the president-elect “acknowledged Vice President Harris on her strength, professionalism, and tenacity throughout the campaign, and both leaders agreed on the importance of unifying the country,” according to Trump spokesman Steven Cheung.

The Associated Press contributed to this report.