Mike Greenberg has done nearly every job at ESPN. But his latest project is as the host of a show you might not expect to see “Greeny” in. Bettor Days with Mike Greenberg, a series co-produced by Greenberg that premiered its second season last week on ESPN+, reenacts the dramatic stories of extraordinary gambling snafus. The eight-episode run is told across many sports and cities and spans the spectrum from heart-warming to zany as it takes sports fans inside the wild world of sports betting.