On Tuesday, Mexican-born American runner Leo Manzano won a silver medal in the men’s 1,500-meter final, running the fastest time ever by a U.S. athlete at the Games. Manzano, 27, entered the U.S. at the age of 4 without papers, according to LetsRun. He didn’t gain legal residency until 10 years later.

“Silver medal, still felt like I won! Representing two countries USA and Mexico!”, Manzano tweeted shortly after his win. Most of his tweets throughout the Olympics have been in both Spanish and English.

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