Ezekiel Elliott #21 of the Dallas Cowboys is seen during the preseason game against the Los Angeles Rams at the Los Angeles Memorial Coliseum on August 12, 2017 in Los Angeles, California

Ezekiel Elliott #21 of the Dallas Cowboys is seen during the preseason game against the Los Angeles Rams at the Los Angeles Memorial Coliseum on August 12, 2017 in Los Angeles, California.

*Ezekiel Elliott’s appeal of his six-game suspension will focus on testimony given by his ex-girlfriend to the NFL, according to ESPN.

The Dallas Cowboys running back is expected to file his appeal Tuesday, four days after the NFL suspended the running back for violating the league’s personal conduct policy.

Elliott will argue, according to the documents obtained by the Fort Worth Star-Telegram, that his ex-girlfriend, Tiffany Thompson, made multiple threats to “ruin his career.” The appeal also will highlight text messages from Thompson that encouraged a friend to lie to police about an alleged domestic assault in July 2016.

Elliott’s father, Stacy Elliott, tweeted Monday that his son’s “legal team is ready to fight” and copied a portion of the Star-Telegram’s report.

The Columbus (Ohio) City Attorney’s office announced in September that it would not pursue charges against Elliott because of “conflicting and inconsistent information,” but the NFL can penalize a player even without legal charges.

The NFL announced the suspension Friday after a 13-month investigation.