I'm not really that well informed, but I thought To Bolt or Not to Be at Smith was the first " sport route ", like 1983?
Dirty Gerdie I don't think counts, there are three pins I think, and clipping the first one is pretty sporty.
Coming from further South, the very few bolts in the Gunks interested me enough that Never Never Land was my first 5.9 lead. P-38/SL as I did it was almost all nuts,was it different earlier?
Circa 1981/2 Mel Hamel and I came here and explored the recently discovered South Buttress. The waitress at the Big Pickle gave us a topo on a napkin for Children's Crusade, to " follow a line of bolts up a left leaning dike". The first one we came to( I'd never seen such a thing) was Last Tango, and we got way up into it, of course, it was wet at the bottom and I climbed it one barefoot and one shod, and couldn't do the crux, but being NH where we always got our asses handed anyway, we just assumed we sucked.
Next day the waitress straightened us out, we did CC. Later happened to walk by when Russ and Rosie had just freed LT. Surely that is/ was a sport route?
Edit: When we pushed the envelope, we yo-yo'd, which to us was way more acceptable than hang dogging per se. Three falls, you're out. Fall and must go back to a no-hands rest. I don't ever recall doing it toward a redpoint goal, if yo-yo'd it was compromised, but ok for training.