Rivera was a general assignment sportswriter and reporter at
ESPN Deportes Digital before being named a
New York Yankees beat writer. She is the second woman of color to have covered the Yankees as a beat, following in the footsteps of her mentor,
Claire Smith. Prior to working at ESPN, Rivera was an editorial producer and writer at
Major League Baseball Advanced Media and a reporter and editor at
Univision Communications. She was the only Latina national baseball writer and commentator for
ESPN and ESPN Deportes and the only woman to have been a color commentator for ESPN Deportes Radio for
MLB's All Star Game, postseason, and
World Series broadcasts. Rivera has been a guest contributor on Béisbol Esta Noche and
Sunday Night Baseball in Spanish and English, in addition to
Outside the Lines. She is also a frequent contributor to ESPN's flagship program,
SportsCenter, and was a guest panelist on the July 21–22, 2016 edition of
ESPN First Take. Rivera was the host of the
Max y Marly podcast alongside SportsCenter anchor
Max Bretos. She was also the lead reporter on the ESPN initiative known as “Béisbol Experience”, the most extensive cross-platform project ever done by the network on Latino MLB players living in the United States. Rivera hosted the debate show
Nación ESPN on
ESPN2 alongside NBA Analyst and ESPN Los Angeles Radio host
Jorge Sedano. On October 13, 2017, Rivera was named one of “The 30 Most Influential Hispanics in Sports” by
Sports Illustrated. ==Departure from ESPN==