Ald. George Cardenas (12) [left] and Ald. David Moore (17) objected on Tuesday to an ordinance that would legalize sports betting at Chicago stadiums and ballparks.

A long-brewing effort to allow fans to place bets at Chicago stadiums hit yet another rough patch on Tuesday, as a critical mass of aldermen said they were skeptical that the move would balance out to a net benefit for the city and its taxpayers.