 The current second level, the USL Championship, has nominally required soccer-specific stadiums, but like MLS has allowed multiple teams to share stadiums originally built for either American football or baseball.In Canada, smaller, more specialized stadiums have generally become more popular, but none of the major multiple-use stadiums of the 1970s and 1980s have been demolished .The Toronto Blue Jays shared Rogers Centre with the Toronto Argonauts of the CFL before the Argonauts moved to BMO Field after the 2015 season, and shared the facility on a part-time basis with the Buffalo Bills of the NFL for several years beginning in 2008.