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ESPN Major League Baseball (also referred to as MLB on ESPN) is an American presentation of live Major League Baseball (MLB) games produced by ESPN. ESPN's MLB broadcasts have also aired on sister networks and platforms ESPN2, ABC and ESPN+. ESPN's MLB coverage debuted on April 9, 1990 with three Opening Day telecasts. ESPN has held the exclusive national broadcast rights to Sunday Night Baseball since 1990. The network also airs the defending world champions game on Opening Day. Wikipedia