Radius-equilibrium temperature of known giant (R > 0.5 R_J) transiting planets from the NASA Exoplanet Data Archive with accurate mass and radii (σ_M/M <= 25% and σ_R/R <= 8%, Otegi et al. 2020). The red vertical line indicates the empirical inflation boundary (Fortney et al. 2021), where planet radii are seen to increase with equilibrium temperature. TOI-2537b is well within the low-temperature wing and is a valuable target for controlling the model of hot Jupiter radius anomaly.