The Belmont, Massachusetts, mom gained international attention in January when she became the first American woman to compete in seven marathons on seven continents in seven days.

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She knew she was being honored before the Sox game Sunday. The Red Sox gave her a "16 Pizzi" jersey because Monday will mark her 16th Boston Marathon.

When she got to Fenway, not only did she find out she was throwing out the first pitch, but her boyfriend of more than five years, Joe Stilwell, proposed to her on the pitcher's mound.

Pizzi still had the composure to throw out the first pitch!

Congrats to the happy couple!

>> Click here to watch the video (WARNING: Language)