Mike Keller
... that former Michigan linebacker Mike Keller has played in the NFL and held executive positions in the USFL, XFL and World League of American Football?
... that former <a href="./Michigan_Wolverines_football" id="mwD4Y" rel="mw:WikiLink" title="Michigan Wolverines football">Michigan</a> <a href="./Linebacker" id="mwD4c" rel="mw:WikiLink" title="Linebacker">linebacker</a> <b id="mwD4g"><a href="./Mike_Keller" id="mwD4k" rel="mw:WikiLink" title="Mike Keller">Mike Keller</a></b> has played in the <a href="./National_Football_League" id="mwD4o" rel="mw:WikiLink" title="National Football League">NFL</a> and held executive positions in the <a href="./United_States_Football_League" id="mwD4s" rel="mw:WikiLink" title="United States Football League">USFL</a>, <a class="mw-disambig" href="./XFL" id="mwD4w" rel="mw:WikiLink" title="XFL">XFL</a> and <a class="mw-redirect" href="./World_League_of_American_Football" id="mwD40" rel="mw:WikiLink" title="World League of American Football">World League of American Football</a>?