First base umpire

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First, First aid, First to file and first to invent, First Minister and Deputy First Minister of Northern Ireland, First Beeline, First London, First Minister of Scotland, First baseman, First Boston, First West Yorkshire, FIRST Robotics Competition, First Worcester, First Student, First contact, First Act, Stoney Nakoda First Nation, First aid kit, First lady, First family, First Love, First woman, First degree, First Time, B2 First, First Fruits, First impression, First ladies of Pennsylvania, First Light, Who's on First?, First American, First Nations, Credit Suisse First Boston, First Line, First man or woman, First Fleet, First person, First ladies of Nevada, First of May, First ascent, First Union, The First Noel, Kʼómoks First Nation, First Horizon Bank, FIRST Tech Challenge, First Cut, Deputy First Minister of Scotland, First-order logic, Singaporeans First, First Things First (album), First Things First, First National Pictures, First Hampshire & Dorset, FIRST Lego League Challenge, Ɂakisq̓nuk First Nation, First Lady of the United States, First Glasgow, List of first ladies of Minnesota, First-person narrative, First-class cricket, First Ministers' conference, First Kiss, First Minister of Wales, First Nehru ministry, First ladies and gentlemen of Alaska, First responder, First Artists, First-rate, First ladies and gentlemen of North Carolina, First-order, First-person (video games), First Step, First Lady of Ethiopia, First Nations in Ontario, First 100 days of the first Trump presidency, First South West, First and Last, First ladies and gentlemen of Guam, First principle, First ladies and gentlemen of Arkansas, First Presidency (LDS Church), First Album, First strike, First grade, First ladies of Wisconsin, First Republic of Korea, First Merchants Corporation, First American Financial Corporation, First ladies and gentlemen of the Philippines, First Lady of Venezuela, Dehcho First Nations, First Lord of the Admiralty, Be First, Breadth-first search, First minister, First ladies and gentlemen of Oklahoma, First Chicago Bank, First-wave feminism, First-hitting-time model, First Bus East of England, First Data, First Scotland East, First-foot, First Growth, First Dates, First Nations in Canada, First ladies of Florida, First Expired, First Out, First day of issue, Clovis First, First ladies and gentlemen of Mexico, For the First Time, FIRST Championship, First ladies of Maryland, RSS First Step, First Lady of the Gambia, First West of England, First Blood, FirstGroup, The First 48, First sergeant, Mitaanjigamiing First Nation, First Hill, Seattle, First white child, First World problem, First pass effect, First Evil, First Internet Bank, Love at First Sight, First Folio, First period, First lieutenant, Wizard's First Rule, Certified first responder, Ceremonial first pitch, First-mover advantage, First Church, First Second Books, Maxillary first premolar, First Lady of Brazil, First hand, First Sea Lord, First Things First (talk show), Sq'éwlets First Nation, First ladies of North Dakota, First class, Sipekne'katik First Nation, The First, Nanoose First Nation, First Aliyah, First ladies of Missouri, First Nations in Alberta