[Edit: According to Rob Biertempfel, the Pirates will be playing a doubleheader against the Mets tomorrow, so the things I wrote below about Nicasio getting skipped aren't true anymore.]
The semi-anticipated return of Neil Walker to Pittsburgh following his less-than-amicable departure in the offseason, coupled with Jon Niese getting a go against his old team, will have to wait until tomorrow, as the Pirates and Mets were rained out today. Niese is scheduled to pitch tomorrow, with Nicasio then getting skipped from what would have been his start. [Edit: Nicasio will likely pitch in the doubleheader.] Liriano will be on the bump Wednesday. I suspect more than one guy in the Pirates' clubhouse appreciates the free day off, though.
Remember, this starts a huge stretch for the Pirates against tough teams, so tune in tomorrow to see it get going.