  We report the mass and distance measurements of two single-lens events from
the 2017 Spitzer microlensing campaign. The ground-based observations yield the
detection of finite-source effects, and the microlens parallaxes are derived
from the joint analysis of ground-based observations and Spitzer observations.
We find that the lens of OGLE-2017-BLG-1254 is a $0.60 \pm 0.03 M_{\odot}$ star
with $D_{\rm LS} = 0.53 \pm 0.11~\text{kpc}$, where $D_{\rm LS}$ is the
distance between the lens and the source. The second event, OGLE-2017-BLG-1161,
is subject to the known satellite parallax degeneracy, and thus is either a
$0.51^{+0.12}_{-0.10} M_{\odot}$ star with $D_{\rm LS} = 0.40 \pm
0.12~\text{kpc}$ or a $0.38^{+0.13}_{-0.12} M_{\odot}$ star with $D_{\rm LS} =
0.53 \pm 0.19~\text{kpc}$. Both of the lenses are therefore isolated stars in
the Galactic bulge. By comparing the mass and distance distributions of the
eight published Spitzer finite-source events with the expectations from a
Galactic model, we find that the Spitzer sample is in agreement with the
probability of finite-source effects occurrence in single lens events.
