12:51 PM PT -- 8/11 -- Bauer's attorneys, Shawn Holley and Jon Fetterolf, released a statement to TMZ Sports ... saying, "Lindsey Hill’s claims were judicially disproven last August following a hearing regarding a DVRO petition filed in bad faith."
"She 'materially misled' the court and could not meet the lowest burden of proof in our justice system -- because her claims were false."
They added ... "She is being sued for defamation to be held accountable for her lies and the damage it has caused. Her countersuit is a regurgitation of her judicially disproven claims and yet another attempt by Ms. Hill to defame Mr. Bauer and seek to profit from her lies."
Trevor Bauer's assault accuser is firing back at the MLB star after he sued her earlier this year ... filing a countersuit for battery against the Cy Young winner in Los Angeles.
Lindsey Hill, from San Diego, filed a lawsuit for sexual battery and battery in federal court on Tuesday, again alleging 31-year-old Bauer beat her up on two occasions during sex, punching and choking her.
Bauer's always adamantly denied the allegations, maintaining he and Lindsey had a consensual, sexual relationship. The L.A. county district attorney's office investigated Hill's claims and opted not to file charges against the Dodgers pitcher. A judge also denied Hill a restraining order, calling claims in the petition "materially misleading"
In Hill's newly filed civil lawsuit, she claims her "life has been turned into a nightmare by a powerful man who mercilessly battered her and counted on facing no consequences whatsoever for his despicable conduct."
Lindsey claims Bauer got physical with her on two occasions ... in April and May of 2021.
"Last year, disgraced Major League Baseball player Trevor Bauer violently and sadistically abused Hill in the most appalling manner imaginable, sexually battering and battering a defenseless woman."
Hill doesn't specify how much she's seeking in damages.