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Matt Serra felt "disrespected" and "hurt" Aljamain Sterling didn't want him in his corner at UFC 259, announces retirement from cornering | BJPenn.com
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UFC Legend Matt Serra Walks Away from Fighting, but Far from Done with MMA | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
On This Day: Matt Serra SHOCKS Georges St-Pierre! | #OnThisDay in 2007: Matt Serra SHOCKED the world as he beat Georges St-Pierre! | By UFC | Facebook
![Video: Matt Serra reunites with Aljamain Sterling, vows to help in title defense against Petr Yan - MMA Fighting Video: Matt Serra reunites with Aljamain Sterling, vows to help in title defense against Petr Yan - MMA Fighting](https://cdn.vox-cdn.com/thumbor/hPVnrzmIn81bdDDlJQjzPYXBggY=/0x195:736x691/1200x800/filters:focal(304x267:420x383)/cdn.vox-cdn.com/uploads/chorus_image/image/68975835/Ewm9KV0XEA8__6d.0.jpg)