2010 – The Nationals announce that President Barack Obama will throw the ceremonial first pitch on opening day, April 5th, against the Phillies at Nationals Park. It will mark the 100th anniversary of the first presidential first pitch, by William Howard Taft, at the Washington Senators’ home opener on April 14, 1910.

On March 29, 2010 — 2010 – The Nationals announce that President Barack Obama will throw the ceremonial first pitch on opening day, April 5th, against the Phillies at Nationals Park. It will mark the 100th anniversary of the first presidential first pitch, by William Howard Taft, at the Washington Senators’ home opener on April 14, 1910.

Sources –
Baseball Reference March 29
SABR Games Project
National Pastime March 29
Retro Sheet
Replay The Game

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