Danielle Reyna -- the mother of USMNT player Gio Reyna -- is admitting she's the individual who notified U.S. Soccer about a 1991 domestic violence incident involving Gregg Berhalter.
As we previously reported, Berhalter claims someone outside the organization was attempting to get him fired by exposing an altercation from when he was an 18-year-old college freshman ... in which he kicked his now-wife, Rosalind, after an argument.
Danielle -- who's married to ex-Team USA captain Claudio Reyna -- says she told U.S. Soccer about the incident because she was unhappy with how Berhalter spoke about her son following the World Cup.