Portland Trail Blazers coach Chauncey Billups and Miami Heat guard Terry Rozier have been arrested as part of a pair of wide-ranging investigations related to illegal sports betting and rigged poker games backed by the Mafia, authorities announced Thursday.Portland Trail Blazers coach Chauncey Billups and Miami Heat guard Terry Rozier have been arrested as part of a pair of wide-ranging investigations related to illegal sports betting and rigged poker games backed by the Mafia, authorities announced Thursday.