This is definitely a Song Sparrow.
EDIT: I will explain my reasoning.
I would expect Savannah to have a white crown stripe, yellow supercillium behind the eye, overall lighter coloration with crisper streaks on the breast and crown and fewer breast streaks. I would also expect it to have a lighter, cleaner breast than this bird, which is a grayish, dirtier looking breast typical of Song. The bill is also pretty dark on this bird, suggesting Song.
I would expect Lincoln's to have a buffy malar, grayish face above the eye, very very crisp breast streaks, with buffy wash across the breast and down the sides. This bird shows none of those field marks.
Warbler Life List: 35 species
Sparrow Life List: 18 species
Owl Life List: 9 species