Since when does UPMC Mercy have an IR program, or even a DR program?
EDIT: Looked into this more, they ONLY have IM and GS programs at Mercy.
Short of IM (Mercy or McKeesport vs. main), FM (Mercy, McKeesport, Shadyside, St Margaret's, Altoona, Williamsport, and Horizon - there is no main FM residency, although St M's would be most "prestigious"), EM (Hamot vs. main) and GS (Mercy or Horizon vs. main), which have programs at other hospitals, a UPMC match IS a flagship UPMC match, whether its Presby, Montefiore, Magee, CHP, etc. or whatever they want to call it.