Question: Who was the founder of the sports league Mirtha Marrero played in?

Context articles: 2017 Swedish Open – Men's Doubles
Mock draft
All-American Girls Professional Baseball League
Oreste Marrero
2004–05 NHL lockout
Mirtha Marrero
EMS One Katowice 2014
ESL One Katowice 2015
ESL One Cologne 2014
Professional sports in Canada

Marcel Granollers and David Marrero were the defending champions, but Granollers chose not to participate this year.
 Marrero played alongside Nenad Zimonjić, but lost in the quarterfinals to Elias and Mikael Ymer.
Mock draft is a term used by sports websites and magazines in reference to a simulation of a sports league draft or fantasy sports league's draft.
The All-American Girls Professional Baseball League was a women's professional baseball league founded by Philip K. Wrigley which existed from 1943 to 1954.
 Over 600 women played in the league.
 In 1948, league attendance peaked over 900,000 spectators in attendance.
 The Rockford Peaches won a league-best four championships while playing in the AAGPBL.
 For most of the league's history, manager Bill Allington coached different teams and led the league in career wins as a manager.
 The 1992 motion picture "A League of Their Own" tells a fictionalized account of the Rockford Peaches.
Oreste Vilato Marrero Vázquez (born October 31, 1969) is a former professional baseball first baseman.
 He played parts of two seasons in Major League Baseball for the Los Angeles Dodgers and Montreal Expos, appearing in 42 games during the 1993 and 1996 seasons.
 After his release from the Dodgers system, Marrero played from 2000 to 2005 in the Atlantic League, primarily with the Bridgeport Bluefish.
The 2004–05 NHL lockout was a lockout that resulted in the cancellation of what would have been the 88th season of play of the National Hockey League (NHL).
 It was the first time the Stanley Cup was not awarded since 1919, and the first time a major professional sports league in North America canceled a complete season because of a labor dispute and the second time after the 1994–1995 MLB strike that the Playoffs of a major professional sports league in North America were cancelled.
 The lockout lasted 10 months and 6 days starting September 16, 2004, the day after the collective bargaining agreement (CBA) between the NHL and the NHL Players Association (NHLPA) that resolved the 1994–95 lockout expired.
 The lockout of the 2004–2005 season resulted in 1,230 unplayed games.
 The negotiating teams reached an agreement on July 13, 2005, and the lockout officially ended 9 days later on July 22, after both the NHL owners and players ratified the CBA.
Mirtha Marrero [Fernández] is a former pitcher who played from 1948 through 1953 in the All-American Girls Professional Baseball League.
 She batted and threw right handed.
Electronic Sports League Major Series One Katowice 2014, known as EMS One Katowice 2014 for short, was the second "" major that was held from March 13–16, 2014 at the Spodek Arena in Katowice, Silesian Voivodeship, Poland.
 It was organized by Electronic Sports League and sponsored by the game's developers Valve Corporation.
 The tournament had a total prize pool of US$250,000.
 Virtus.pro was the winner of the event after beating Ninjas in Pyjamas in the finals.
Electronic Sports League One Katowice 2015, known as ESL One Katowice 2015 for short, was the fifth "" ("CS:GO") Major tournament that was from March 12–15, 2015 at the Spodek Arena in Katowice, Silesian Voivodeship, Poland.
 It was the first "CS:GO" Major of 2015.
 It was organized by Electronic Sports League with sponsorship from Valve Corporation.
 The tournament had a total prize pool of $250,000 USD.
Electronic Sports League One Cologne 2014, known as ESL One Cologne 2014 for short, was the third "" ("CS:GO") Major that was held during Gamescom 2014 from August 14–17, 2014 at the Cologne Exhibition Centre in Cologne, North Rhine-Westphalia, Germany.
 It was the second "CS:GO" Major of 2014.
 It was organized by Electronic Sports League with sponsorship from Valve Corporation.
 The tournament had a total prize pool of $250,000 USD.
There are professional teams based in Canada in several professional sports leagues.
 The National Hockey League has seven Canadian franchises and is the most popular professional sports league in Canada.
 The second most popular sports league in Canada is the Canadian Football League.
 Major League Baseball, the National Basketball Association and Major League Soccer are also popular in Canada, more so in Ontario than the rest of the country.