Capital Weather Gang's NatCast calling for 'Small shower chance but, otherwise, should be an error-free evening at least on the weather's part' with temperatures of 77 at first pitch and 69 by ninth inning, 20% chance of rain.
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Should have a pretty good group in the place tonight for Harper's home debut - the attendance records to beat:
43,618 on Thursday 14th April 2005 - Best-ever attendance against Diamondbacks (of course that was the debut home opener at RFK)
41,517 on Tuesday 23rd June 2009 vs Red Sox - Best-ever Tuesday home attendance (RFK best for that day of the week was 40,516 for the 2006 home opener against the Mets)
35,334 on Sunday 17th April 2005 - Best-ever home attendance against Diamondbacks (non-Opening Day; again of course at RFK)
27,330 on Thursday 10th July 2008 - Best-ever Nats Park attendance against Diamondbacks
Diamondbacks have historically been a moderate-to-poor draw here; three of the five lowest attendances in the Nats' RFK history were for an April weekend series against that team in 2007, and on six different occasions they failed to crack the 20k mark at Nats Park - although for the Nats Park record low (17,029) there was a valid excuse - that day was 23rd August 2011, the day of the earthquake.