The Pirates have allowed more runs than any team in the National League. If you'd told me before the season started that was going to happen, I wouldn't have been surprised.
I would have been surprised, though, that the Bucs would be tied for third in the NL in runs scored. That's remarkable, and it says a lot about how fantastic Nate McLouth, Xavier Nady and Ryan Doumit -- and, to a far lesser extent, Jason Bay -- have been. Offensively, the entire infield has been a black hole.
Actually, this team looks a little like the 2003 Bucs, who were like the 1927 Yankees in comparison to other Pirate teams of the early 21st century. The 2003 team scored a downright respectable number of runs with great performances from their catcher (Jason Kendall) and outfielders (Brian Giles, Reggie Sanders, Matt Stairs, Craig Wilson, Kenny Lofton, Jason Bay) but a dreadful infield.