Guillermo Moscoso

As a member of the Oneonta Tigers, Moscoso pitched the second perfect game in New York–Penn League history in a 6–0 victory over the Batavia Muckdogs on July 15, 2007.[1]

Moscoso was acquired by the Texas Rangers from the Detroit Tigers along with pitcher Carlos Melo for catcher Gerald Laird on December 12, 2008.

On May 30, 2009, Moscoso made his major league debut against the Oakland Athletics, striking out 2 and pitching a scoreless ninth inning.[2]

After appearing in ten games in '09, Moscoso had an ERA of 3.21 through 14.0 innings pitched, giving up 15 hits, 7 runs, and 6 walks but also struck out a dozen. As of August, Moscoso has only pitched one game in the new decade. On May 20, against Baltimore, Guillermo pitched 2⁄3 of an inning, giving up two hits, two runs, and two walks while also striking out two. His ERA is currently 27.00.

In January 2011, Texas traded Moscoso to the Oakland for Ryan Kelly.[3]

On May 24, 2011, he was recalled to the Oakland Athletics to take the place in the rotation of Tyson Ross, who went on the DL with a strained left oblique. Fautino de los Santos was optioned to Triple-A to make room.[4]

On September 7, 2011, he carried a no hitter against the Kansas City Royals into the eighth inning.

On January 16, 2012, Moscoso was traded, along with fellow pitcher Josh Outman, to the Colorado Rockies for outfielder Seth Smith.[5] Moscoso went 3–2 with a 6.12 ERA with 50 innings in 23 appearances, 3 starts.

The Kansas City Royals claimed Moscoso off waivers on November 2, 2012.[6] The Royals released him on March 13, 2013.[7]

The Toronto Blue Jays announced that they had claimed Moscoso on waivers on March 16, 2013.[8]

On March 27, 2013, Moscoso was claimed on waivers by the Chicago Cubs.

On July 26, 2013, Moscoso was traded to the San Francisco Giants for a player to be named later or cash considerations.[9] He was designated for assignment on November 20, 2013. On November 21, 2013, Moscoso elected to become a Free Agent.

On December 26, 2013, it was announced that Moscoso had signed with the Yokohama DeNA BayStars of Nippon Professional Baseball for 2014.[10]

On May 7, 2017, Moscoso signed with the Bravos de León of the Mexican Baseball League.

On February 7, 2018, Moscoso signed a minor league deal with the Los Angeles Dodgers. He appeared in 16 games (13 starts) for the AAA Oklahoma City Dodgers with a 4.90 ERA. He was released on June 29, 2018.

On July 3, 2018, Moscoso signed with the Bravos de León of the Mexican League. He became a free agent following the season, but later re-signed with the team on April 23, 2019.

On July 2, 2019, Moscoso was traded to the Pericos de Puebla of the Mexican League.

On November 29, 2019, Moscoso was traded back to the Bravos de León of the Mexican League. Moscoso was released by the Bravos on February 17, 2020. After the 2020 season, he played for Tigres de Aragua of the Liga Venezolana de Béisbol Profesional (LVMP). He has also played for Venezuela in the 2021 Caribbean Series.

On December 20, 2021, Moscoso re-signed with the Bravos de León of the Mexican League for the 2022 season.[11] He became a free agent following the 2022 season in which he made 9 starts and went 1-5 with a 8.47 era with 17 walks and 27 strikeouts.