BNN Stats: Active Career Pitching Leaders
Which active pitchers are leading the Union League in career ERA?

<Ernesto Guzalán:player#4554>, PA, 		4.14
<César Aguilar:player#7550>, CL, 		4.40
<António Maldonado:player#8354>, BK, 		4.52
<Bobby Lawson:player#139>, FR, 		4.70
<Alfredo Pérez:player#8162>, OC, 		5.03
