Patrick, whose participation in NASCAR has always been polarizing given the attention she receives despite her lack of success, closed the post by writing: "I have the utmost faith in myself and those around me, and feel confident about my future."

"Smithfield has activated heavily and successfully within the sport, and we're honored to be a part of the brand's forward initiatives and strategy," SHR team President Brett Frood said.

"Although we're not ready to announce the full details of the program, we look forward to this new endeavor while remaining focused on the upcoming playoffs and putting forth the best effort possible to win more races and contend for another championship."

RPM this year downsized to one Cup car because of sponsorship reasons, and talks on a contract extension with Almirola stalled when Smithfield began looking at other options.

"The decision to leave Richard Petty Motorsports and join Stewart-Haas Racing was difficult but we feel this move will improve our competitiveness on the track and strengthen our position as a leading consumer packaged goods company," Smithfield said in a statement.