Roberto Antonio Petagine Hernandez (/pɛtəˈɡɪneɪ/; born June 7, 1971 in Nueva Esparta, Venezuela) is a retired professional baseball player. His Major League Baseball career includes brief stints with the Houston Astros (1994), San Diego Padres (1995), New York Mets (1996 and 1997), Cincinnati Reds (1998), Boston Red Sox (2005), and Seattle Mariners (2006); but he is best known for his success in the Japanese Central League between 1999 and 2004 where, as a member of the Yakult Swallows (1999–2002) and Yomiuri Giants (2003–2004), he was among that country's premier offensive players.

Petagine entered professional baseball on February 13, 1990, at the age of 18, when Houston signed him as an undrafted amateur free agent after starting his career in Venezuela with the Leones del Caracas baseball team in which he contributed with his power for several campaigns becoming a star and a well-known baseball player in his country. Later that year, he played his first pro season with the rookie-level GCL Astros of the Gulf Coast League. His production there, and the following year with Single-A Burlington, was solid (if unspectacular). Petagine would go on to substantial minor league success in his early to mid 20s, but even his early stats hinted at the trends that would define—and perhaps curse—his career in American baseball: always having an above-average OBP, but relatively little home run power, by the standards historically applied to first basemen.

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