It'll be interesting to see what attendance will be like tonight:
HELPING ATTENDANCE - Strasburg start, good weather
HINDERING ATTENDANCE - uncompelling opponent, conflict with Caps playoff match
...meanwhile, announced attendances at the Thursday and Saturday fixtures of the now-completed Reds series were the two highest ever at Nats Park against this opponent (40,907 Thursday, 35,489 Saturday)...topping the old record set on 4th June 2010 (33,774 - the famous 'Strasburg debut that wasn't' when rumours went out about a week earlier that that would be his debut).
Nats Park record attendance for a visit by the Astros: 33,653 (Friday 11th July 2008)
Nats Park record attendance for a Monday fixture: 41,290 (the notorious 5th April 2010 home opener vs Phillies)
Nats Park record attendance for a non-Opening-Day Monday fixture: 34,789 (30th May 2011 vs Phillies - Memorial Day)
Nats Park record attendance for a non-Opening-Day, non-holiday Monday fixture: 26,209 (9th June 2008 vs Giants)