Orlando Hernandez’s career is looking a lot more cloudy. The Mets said today that El Duque returned to New York for an MRI exam to determine the source of discomfort in his right foot.

That’s the same foot that bothered him throughout spring training and forced the 40-something Cuban to begin the year on the DL.

Hernandez’s third minor-league rehab start in Port St. Lucie has been put on hold, the Mets said.