Mariano Rivera Jr. selected by Nationals in fourth round on Day 2 of draft - Washington Times

MLB Draft Results 2015: Washington Nationals draft Mariano Rivera, Jr. 134th in 4th Round - Federal Baseball

USA Baseball Names 2019 15U National Team Roster

Mariano Rivera III: Prospect Profile for Nationals' 4th-Round Pick, News, Scores, Highlights, Stats, and Rumors

Mariano Rivera dealt with plenty of adversity on the way to being baseball's greatest closer – New York Daily News

Before they were postseason bound: Pirates

MLB Power Rankings: The Padres reach a season high and the Phillies are flying - The Athletic

Best baseball player born every year since 1847

GSA Spotlight: LSU's Paul Skenes

Mariano Rivera, Baseball Wiki