If pitchers were the only criteria, the Pirates would seem to have a slight edge. They’re starting Francisco Liriano:
The veteran lefty has gone 3-0 with a 0.75 ERA against the Cardinals in three starts this year, spinning eight scoreless innings against them his last time facing them on Aug. 30. Overall, Liriano has been masterful at home, going 8-1 with a 1.47 ERA in 11 starts at PNC Park.
The Cardinals are countering with [Joe] Kelly, who went 10-2 with a 2.18 ERA in 15 outings since joining the rotation July 6. He made consecutive starts against the Pirates at the beginning of September, winning both by pitching six innings and allowing just one run.