He 's evolved into arguably the Padres ' most reliable starter and figures to have his rotation spot locked up for next year .
But since then , Perdomo has lowered his ERA in 10 of his last 12 outings .
Perdomo 's evolved into arguably the Padres ' most reliable starter and figures to have Perdomo 's rotation spot locked up for next year .
But since then , Perdomo has lowered his ERA in 10 of his last 12 outings .