Bill Wilkinson
... that pitchers Bill Wilkinson and Jim Bluejacket are the only great-grandfather and great-grandson pair to both play in Major League Baseball?
... that <a href="./Pitcher" id="mwEAs" rel="mw:WikiLink" title="Pitcher">pitchers</a> <b id="mwEAw"><a class="mw-redirect mw-disambig" href="./Bill_Wilkinson" id="mwEA0" rel="mw:WikiLink" title="Bill Wilkinson">Bill Wilkinson</a></b> and <a href="./Jim_Bluejacket" id="mwEA4" rel="mw:WikiLink" title="Jim Bluejacket">Jim Bluejacket</a> are the only great-grandfather and great-grandson pair to both play in <a href="./Major_League_Baseball" id="mwEA8" rel="mw:WikiLink" title="Major League Baseball">Major League Baseball</a>?