This invention provides a putter head comprising a head body and a face insert mounted on a face surface of the head body. Multiple event monitoring agents may be deployed across an enterprise-wide computing system such that each event monitoring agent monitors at least one event generator of the enterprise-wide computing system. In the retracted position the headrest is generally parallel with the backrest and in the extended position the headrest defines an angle with the backrest in which the front surface of headrest is rotated to partially face the front surface of the backrest.