A weight member is removably attachable to a racquet for use during warm-up. The device is a skeletal structure that has a laterally expandable mouth, a throat, and a pair of heads that resiliently converge toward one another. The skeletal structure is formed of a metal bar member of a gauge to match the desired device weight and is coated with a protective outer layer. At least one resilient member can bridge a gap at the mouth and throat. The device is symmetrical in both the X-plane and the Y-plane.