UFC Vegas 77 features a women’s bantamweight bout between former champion Holly Holm and rising star Mayro Bueno Silva, but on Wednesday lost a pivotal heavyweight bout. Walt Harris vs. Josh Parisian was pulled from the card, according to UFC officials . The promotion’s statement regarding the bout’s removal noted that it was Harris that was pulled because of “an issue with a recent USADA collected sample” from him. No further details accompanied the announcement
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UFC Vegas 77 loses Walt Harris bout due to USADA issues – MMA Weekly