Julio Mateo debuted on May 7, 2002, playing for the Seattle Mariners at Safeco Field; he played his final game on May 3, 2007, playing for the Seattle Mariners at Safeco Field.
Julio Mateo played in 45 games at pitcher for the Seattle Mariners in 2004, starting in none of them. He played for a total of 173 outs, equivalent to 6.41 9-inning games. He made 3 putouts, had one assist, and committed 3 errors, equivalent to .468 errors per 9-inning game. He had one double play.
Julio Mateo played in 48 games at pitcher for the Seattle Mariners in 2006, starting in none of them. He played for a total of 161 outs, equivalent to 5.96 9-inning games. He made one putout, had 4 assists, and committed one error, equivalent to .168 errors per 9-inning game. He had one double play.
Julio Becquer debuted on September 13, 1955 and played his final game on September 18, 1963.
Julio Bonetti debuted on April 22, 1937 and played his final game on April 22, 1940.
Julio Borbon debuted on June 29, 2009 and played his final game on August 2, 2013.
Julio DePaula debuted on May 16, 2007 and played his final game on September 29, 2007.
NFL player Julio Jones played for Alabama.
Henry Mateo debuted on July 28, 2001, playing for the Montreal Expos at Stade Olympique; he played his final game on October 1, 2006, playing for the Washington Nationals at R.F.K. Stadium.
Juan Mateo debuted on August 3, 2006, playing for the Chicago Cubs at Wrigley Field; he played his final game on September 30, 2006, playing for the Chicago Cubs at Wrigley Field.
Marcos Mateo debuted on August 9, 2010, playing for the Chicago Cubs at Wrigley Field; he played his final game on July 4, 2011, playing for the Chicago Cubs at Wrigley Field.
Julio Becquer debuted on September 13, 1955, playing for the Washington Senators at Griffith Stadium I; he played his final game on September 18, 1963, playing for the at .
Julio Mosquera debuted on August 17, 1996, playing for the Toronto Blue Jays at Skydome; he played his final game on June 8, 2005, playing for the at .