Referee Jaime Herrera hangs up his whistle
Image: Jaime Herrera (center right) with Frank Anderson, Armando Villarreal and Michael Kampmeinert ahead of his MLS center referee debut PRO’s Jaime
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Michael Kampmeinert
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Image: Jaime Herrera (right center) with Frank Anderson, Armando Villarreal and Michael Kampmeinert ahead of his MLS center referee debut Jaime Herrera
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Image (L-R): Michael Kampmeinert, Baboucarr Jallow, Ricardo Salazar and Marco Arruda Officials of the Professional Referee Organization have been wearing
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