He was replaced on the roster by Manny Acosta .
Igarashi allowed only one run in his first seven MLB appearances , but he was placed on the disabled list on April 21 , 2010 after suffering a hamstring injury .
Igarashi was replaced on the roster by Manny Acosta .
Igarashi allowed only one run in his first seven MLB appearances , but he was placed on the disabled list on April 21 , 2010 after suffering a hamstring injury .