EVERYTHING IS GOING SWIMMINGLY: James Baker buries Clinton campaign lawyer Michael Sussmann in probe.

A former FBI official delivered devastating testimony Thursday against former Hillary Clinton campaign lawyer Michael Sussmann — saying he’s “100% confident” the defendant denied acting “on behalf of any particular client” when he handed over since-debunked information linking Donald Trump and Russia.

“I think it was pretty close to the beginning of the meeting. Part of his introduction to the meeting,” former FBI general counsel James Baker told jurors in Washington, DC, federal court.

Baker’s account directly supports the sole charge against Sussmann as a result of special counsel John Durham’s probe into alleged law-breaking in connection with the FBI and Robert Mueller’s probes of purported Trump-Russia ties.

Sussmann, 57, is on trial on a single count of lying to the government during a Sept. 19, 2016, sit-down with Baker at FBI headquarters.

Ouch.