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Oct 16 2021: William Hacker places 6th at the Cat P/1/2/3/4 Race at the World's Fair Race #8 by New York Bike Lawyers and Bike Rescue in a field sprint
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Oct 2 2021: William Hacker places 4th at the Men Open Pro/Cat 1/2/3 Race at the Kissena Fall Classic in a field sprint
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Sep 6 2021: William Hacker places 59th at the Men Pro/1/2 Race at the Green Mountain Stage Race - General Classification in a group sprint
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Sep 6 2021: William Hacker places 54th at the Men Pro/1/2 Race at the Green Mountain Stage Race - Stage 4 Criterium in a group sprint
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Sep 5 2021: William Hacker places 70th at the Men Pro/1 Race at the Green Mountain Stage Race - Stage 3 Road Race in a group sprint
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Sep 4 2021: William Hacker places 40th at the Men Pro/1 Race at the Green Mountain Stage Race - Stage 2 Circuit Race in a field sprint
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Sep 3 2021: William Hacker places 55th at the Men Pro/1 Race at the Green Mountain Stage Race - Stage 1 Time Trial
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Aug 28 2021: William Hacker places 19th at the Men Cat 1/2/3 Race at the CRCA Dave Jordan Central Park Classic in a group sprint
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Aug 21 2021: William Hacker wins the RoadRace Men Open 1/2/3 Race at the Lucarelli & Castaldi Cup in a group sprint
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Aug 15 2021: William Hacker places 9th at the Cat P/1/2/3 Race at the Randall's Island Crit p/b Bike Rescue & Arias Sportswear