In 2012 , he finished the season with a 8.62 ERA losing all ability to control his pitches .
In 2011 , Ko earned 14 holds but his ERA rose to 4.44 .
In 2012 , Ko finished the season with a 8.62 ERA losing all ability to control Ko 's pitches .
In 2011 , Ko earned 14 holds but his ERA rose to 4.44 .