Tetflupyrolimet is a novel herbicide that inhibits dihydroorotate dehydrogenase (DHODH) in susceptible weeds, including those in warm-season turfgrass and rice. Given that warm-season species are regionally managed alongside cool-season species sensitive to tetflupyrolimet, research on its lateral movement within turfgrass is warranted. Field experiments conducted in spring 2023 and 2024 at the North Carolina State University Lake Wheeler Turfgrass Field Lab evaluated potential downslope movement of tetflupyrolimet (400 g ai ha⁻¹) compared to pronamide (1160 g ai ha⁻¹), an herbicide known to move downslope. The studies took place on a 9.5% sloped hybrid bermudagrass plot established on Cecil sandy loam soil, under two moisture regimes at application: field capacity (≈ 34% v/v) and saturation (≈ 46% v/v). Before experimentation, the aboveground hybrid bermudagrass canopy was mechanically removed, and perennial ryegrass was planted as an indicator species. Herbicides were applied to treated areas (2.2 m2) upslope of data collection areas (8.6 m2), with subsequent irrigation and rainfall (2.5 cm total) 24 hours post-application. Downslope movement was assessed at 2, 4, 6, and 8 weeks after treatment (WAT) via perennial ryegrass mortality assessments made via grid (15 cm2) count. Downslope distances associated with a 50% probability of perennial ryegrass mortality (Mortality50) were 1.2 to 3.6 times greater for pronamide compared to tetflupyrolimet. The maximum distance tetflupyrolimet moved was 1.1 m (regardless of soil moisture condition) each year. Comparatively, maximum downslope movement distances for pronamide were 1.5 to 1.65 m under saturated conditions and 1.5 to 1.8 m at field capacity. Overall, these findings suggest a 1.1-m buffer from sensitive species is likely sufficient to prevent undesirable injury following tetflupyrolimet applications to hybrid bermudagrass under conditions similar to this study.