He followed that up with a 25 homer season at double - A Corpus Christi as a 20 year - old in 2013 .
At the age of 19 , Santana clubbed 23 homers for the Lancaster Jethawks of the California league .
Santana followed that up with a 25 homer season at double - A Corpus Christi as a 20 year - old in 2013 .
At the age of 19 , Santana clubbed 23 homers for the Lancaster Jethawks of the California league .