A San Gabriel native, Stefan played baseball at Gabrielano High, where he earned All Mission Valley League honors all 3 years. After playing at Orange Coast College, Stefan moved on to East Los Angeles College. An injury in 2011 kept him sidelined mostly, but he was still drafted by the Los Angeles Dodgers in the 40th round of the 2011 amateur draft. Stefan was traded to the Phillies in the Shane Victorino deal. After his MLB career ended, Stefan also played for the Ecuadorian National team in 2012 & 2013. Stefan has also coached at San Marino HS and is also an associate scout with the Dodgers. If Stefan's name sounds familiar, it should: he's the grandson of famed Dodgers Spanish language broadcaster Jaime Jarrin.