Left: mass–radius diagram for the transiting planets with masses ranging from 1 to 2 M_Jup (data from exoplanet.eu, Schneider et al. 2011). WASP-64 b and WASP-72 b are shown as red square symbols, while the other planets are shown as open circles without their error bars for the sake of clarity. Different iso-density lines are also shown. Right: position of WASP-64 b and WASP-72 b in a irradiation–radius diagram for the same exoplanets sample.