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First-Base Umpires Call Them as They Hear Them - The New York Times
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First Base Footwork Drills - Fundamentals of First Base Series by IMG Academy Baseball (2 of 4) - YouTube
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Baseball Infielder Tips: What to do with a Runner on First Base | PRO TIPS by DICK'S Sporting Goods
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Do You Know This Basic Baseball Skill? …how to catch a throw at first base — Baseball Positive
Best of BP: 1,000 Grounders: What We Still Don't Know About First Base Defense - Baseball ProspectusBaseball Prospectus
First base coaches do more than just stand around - The Boston Globe
First baseman - Wikipedia
First Base Footwork
