Gold Glove Award-winning
... that in baseball, no Gold Glove Award-winning catcher posted an errorless season until Charles Johnson and Mike Matheny accomplished the feat twice in six years?
... that in <a href="./Baseball" id="mwAvo" rel="mw:WikiLink" title="Baseball">baseball</a>, no <b id="mwAvs"><a href="./List_of_Gold_Glove_Award_winners_at_catcher" id="mwAvw" rel="mw:WikiLink" title="List of Gold Glove Award winners at catcher">Gold Glove Award-winning</a></b> <a href="./Catcher" id="mwAv0" rel="mw:WikiLink" title="Catcher">catcher</a> posted an <a href="./Error_(baseball)" id="mwAv4" rel="mw:WikiLink" title="Error (baseball)">errorless</a> <a class="mw-redirect" href="./Major_League_Baseball_season" id="mwAv8" rel="mw:WikiLink" title="Major League Baseball season">season</a> until <a class="mw-redirect mw-disambig" href="./Charles_Johnson_(baseball)" id="mwAwA" rel="mw:WikiLink" title="Charles Johnson (baseball)">Charles Johnson</a> and <a href="./Mike_Matheny" id="mwAwE" rel="mw:WikiLink" title="Mike Matheny">Mike Matheny</a> accomplished the feat twice in six years?