Colon, a Dominican native, was pitching for Aguilas Cibaenas against Gigantes del Cibao when the incident occurred. He did not suffer a fracture or lose any teeth as a result of the line drive, according to Dionisio Soldevila of ESPNDeportes.com.
The 39-year-old right-hander has pitched in the big leagues for 15 seasons, and went 10-9 with a 3.43 ERA in 24 starts for the A's last year. His season ended when he tested positive for a performance-enhancing substance in August.
A pending free agent, Colon had made one previous start for Aguilas, giving up three runs in five innings while striking out eight on Oct. 19.
Andrew Simon is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.