Former President Trump slammed President Biden as "not fit" to run or serve in a Truth Social post Sunday after the commander-in-chief announced he was bowing out from the presidential race, Paralel.Az reports citing Axios.

The GOP nominee, fresh out of a victory lap at the Republican National Convention, faces a very different race than the rematch the country expected.

"He only attained the position of President by lies, Fake News, and not leaving his Basement," Trump wrote.

"All those around him, including his Doctor and the Media, knew that he wasn't capable of being President, and he wasn't."