Excerpts from abc7chicago.com:

During Wednesday night’s recreational softball game at Memorial Park in Midlothian, John Conway, a lieutenant and EMT for the Crestwood Fire Department, stepped off the field to help Santos Gutierrez, 78, who was having a medical emergency while seated in the bleachers.

Gutierrez was later loaded into an ambulance alert and talking. 

“It is the first time I have had to do it off-duty. It makes you feel really good,” Conway said.

Gutierrez remains in the hospital.