Sept 14 (Reuters) - Rating agency Fitch said that numerous sectors could be exposed to heightened credit risk if Chinese property developer Evergrande were to default. "We believe a default would reinforce credit polarisation among homebuilders and could result in headwinds for some smaller banks, although we believe the overall impact on the banking sector would be manageable", Fitch said in a note bit.ly/3CbhKPt late on Tuesday. Fitch downgraded China Evergrande Group to “CC” from “CCC+” on Sep. 7, indicating that it viewed a default of some kind as probable. Reporting by Kanishka Singh in Bengaluru; Editing by Christian Schmollinger Our Standards: The Thomson Reuters Trust Principles.