Radial-velocity residuals of HAT-P-2 (top), HAT-P-22 (middle), and HAT-P-29 (bottom) after removing the orbital signal of their inner giant planets (HAT-P-2b, HAT-P-22b, and HAT-P-29b). Red triangles and blue circles indicate the HIRES and HARPS-N measurements. The SOPHIE RVs of HAT-P-2 are not displayed here because of their relatively short timespan, although they were used for the orbital fit (Tables 5 and 8). Formal error bars that are lower than symbol sizes cannot be seen.