Largie or smallie?

[Fossil Fish]

I caught this guy yesterday in Cook's Bay, and both species are well known from the area. First impression was a smallmouth, but now I'm having second thoughts. It fought a lot harder than the few largemouths I've caught, but never did any aerobatics. There are no stripes that I could see, horizontal or vertical. I wanted to get it back in the water, and I never thought of extending the dorsal fin in time. The mouth looks to end at the eye, not past and the eyes looked dark, not red. No overhead cover where it was caught, but lots of weeds. I'd guess about 10 feet of water. What do any of you seasoned veterans think?