Trevor Bauer's assault accuser says the MLB star choked her unconscious and then had non-consensual anal sex with her... in court docs obtained by TMZ Sports.
The extremely disturbing allegations are all part of a 84-page temporary restraining order application filed by the alleged victims attorney ... where she documents 2 meetings that she claims started as consensual sex -- but morphed into a violent attack.
The 21-year-old accuser says she met Bauer on Instagram ... before ultimately driving from San Diego to Los Angeles on April 21 to meet the Dodgers star.