Joe Buck is set to try and fill Alex Trebek's shoes on "Jeopardy!" -- at least temporarily, and perhaps forever(?) ... this according to some new reports.
Different outlets are reporting that Buck -- perhaps America's most famous sports broadcaster -- will serve as a guest host on the legacy game show soon ... with his episodes apparently slated to air later this summer.
Unclear when filming begins, or how long his stint will be -- but it probably wouldn't run longer than 2 weeks, which is about how long all the other guest hosts have stepped in.