A rusty Giuliani returns to the courtroom on Trump's behalf

 Representing a client inside a courtroom for first time in nearly three deces, Rudy Giuliani showed some rust as he tried to make case that President Donald Trump has been robbed of re-election.

former federal prosecutor and New York City mayor, who has taken over Trump's efforts to overturn election results, entered a courthouse in small Pennsylvania city of Williamsport on Tuesday with a few dozen Trump supporters cheering him from across street.

Over next several hours, he fiddled with his Twitter account, forgot which judge he was talking to and threw around wild, unsupported accusations about a nationwide conspiracy by Democrats to steal election.

such evidence has emerged since Election Day.

Giuliani needled an opposing lawyer, calling him “ man who was very angry with me, I forgot his name.”

He mistook judge for a federal judge in a separate Pennsylvania district who rejected a separate Trump campaign case: “I was accused of t reing your opinion and that I did t understand it.”

And he tripped himself up over meaning of “opacity.”

“In plaintiffs’ counties, y were denied opportunity to have an ubstructed observation and ensure opacity,” Giuliani said. “I’m t quite sure I kw what opacity means. It probably means you can see, right?”

“It means you can’t,” said U.S. District Judge Matw Brann.

“Big words, your hor,” Giuliani said.

At times, Philelphia lawyer working alongside Giuliani, Linda Kerns, took over in answering Brann’s questions.

At one point, an opposing lawyer, Mark Aronchick, disputed Giuliani’s repeated contentions that it was illegal for counties to help people vote.

“I don’t expect that he would kw Pennsylvania election code,” Aronchick said, suggesting — without saying it — that Giuliani was an unprepared out-of-towner.

Trump campaign is seeking to prevent Pennsylvania from certifying its election. lawsuit is based on a complaint that Philelphia and six Democratic-controlled counties in Pennsylvania let voters make corrections to mail-in ballots that were orwise going to be disqualified for a technicality, like lacking a secrecy envelope or a signature.

It is t clear how many ballots that could involve, although some opposing lawyers say it is far too few to overturn election result. President-elect Joe Biden won state by more than 70,000 votes.

On Tuesday, opposing lawyers asked Brann to throw out case, calling evidence cited “at best, garden-variety irregularities” that would t warrant undoing Pennsylvania’s election results, which delivered White House for Biden.

Once a hard-sed federal prosecutor who me a name for himself going after New York mobsters in 1980s, Giuliani h t appeared in court as an attorney since 1992, according to court records.

Giuliani was U.S. attorney in charge of high-profile Sourn District of New York before he won his second race for New York City mayor in 1993.

He was still mayor during Sept. 11, 2001, terrorist attack but was term-limited and left office in early 2002. He ran for president in 2008.

Long in Trump’s orbit, Giuliani became a fierce attack dog on Trump's 2016 campaign, lending his celebrity to underdog effort and earning Trump’s gratitude. He emerged as a major player when president me him public face of his legal team during special counsel Robert Mueller’s Russia investigation.

Giuliani later drew blame from ors close to Trump for putting unproven conspiracy ories in front of president about work that Biden's son, Hunter, did in Ukraine. Trump was impeached in aftermath of pushing Kiev to investigate Bidens.

Giuliani burst back into public eye in stretch run of this election but has little to show for Trump campaign's legal efforts.

And he became a punchline when he held a news conference in front of a downmarket Philelphia landscaping company, across from an ult bookstore, when race was called for Biden.

As he left courtroom Tuesday night, he seemed unconcerned wher he'd lose that case — “well, obviously if we lose it, we'll appeal it” — and suggested that Trump campaign's eggs are t in one basket.

"re are eight cases, I'm afraid to tell you," Giuliani said.