dez bryant*NFLer Dez Bryant is in a heap of trouble today.

The Dallas Cowboys wide receiver allegedly hit his mother in the face with his baseball cap … and grabbed her by the shirt so hard that he ripped her bra, according to arrest documents obtained by TMZ.

The docs say … cops were dispatched to Bryant’s mother’s home in DeSoto, Texas on July 14 at 1:47 PM after receiving a 911 call reporting an assault — family violence.

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Once cops arrived to the scene, Dez’s mom Angela told cops she had gotten into an argument with Dez and demanded that he leave the home … and that’s when Dez got physical.

According to the documents, cops returned to Angela’s home 2 days later and she complained of pain in her wrists, hands and arms .. and said her chest was sore from Dez pushing her.

Cops say they observed bruising in her upper arm. The docs list Dez Bryant as being 6’1″, 198 pounds.

Bryant turned himself into police yesterday, and was booked for assault — family violence, a Class A misdemeanor.

Listen to the call here. (Be advised the sound level is extremely low.)