BNN Stats: Single-Season Records
Who holds the single season record in the United Baseball League for ERA?

<Luis Guerrero:player#2331>, KS,  2.695, 2057
<Duane Howard:player#7859>, -,  2.721, 2056
<Edgar Ramírez:player#10508>, -,  2.820, 2056
<Charlie Hardy:player#11514>, LA,  2.828, 2057
<Orlando Robles:player#8676>, -,  2.833, 2055
