Junichi Tazawa

is a Japanese professional baseball pitcher for the Saitama Musashi Heat Bears of the Baseball Challenge League. He also previously played in Major League Baseball (MLB) for the Boston Red Sox, Miami Marlins, and Los Angeles Angels, and in the Chinese Professional Baseball League (CPBL) for the Wei Chuan Dragons.

Amateur career After he finished his high school career in Yokohama, Tazawa was not drafted by any of Nippon Professional Baseball's 12 teams, and joined the company team of Nippon Oil in the corporate league, unaffiliated with the NPB.

In 2008, Tazawa posted a 10–1 record for Nippon Oil, with a 1.02 earned run average and 95 strikeouts in 88 innings. Tazawa appeared less than 24 hours later in a relief appearance in the semifinal against Central Japan Railway. He pitched 2 and 2/3 innings, and allowed three hits, struck out one, and gave up the go-ahead run in a 3–2 loss. Tazawa was the MVP of the championships, with a 4–0 record and 36 strikeouts.

Professional career

In September 2008, Tazawa announced his intention to skip the NPB draft in order to pursue a career with a Major League team. After his debut on August 7, 2009, he became the third Japanese player, after Mac Suzuki and Kazuhito Tadano, to play in Major League Baseball without first playing professionally in Japan.

On March 22, 2009, Red Sox optioned Tazawa to its AA affiliate, Portland Sea Dogs.

After achieving a record of 9–5 in 18 starts with a 2.57 ERA with Portland, Tazawa was promoted to the AAA Pawtucket Red Sox on July 27, 2009. While in Portland, Tazawa was named to the 2009 Eastern League All Star team, was tied in second for total number of wins, and was tied for third in total strikeouts with 88.

On August 7, 2009, Tazawa was activated from Pawtucket after the Red Sox designated John Smoltz for assignment. He made his debut that night against the New York Yankees in Yankee Stadium in the 14th inning. Tazawa was the last pitcher left in the bullpen for the Red Sox. The first batter he faced was countryman Hideki Matsui, who lined out. In the bottom of the 15th, Tazawa surrendered a two-run walk off home run to Alex Rodriguez.

Tazawa's first major league start was on August 11, 2009, against the Detroit Tigers. In the first inning of the start Tazawa hit Tigers first baseman Miguel Cabrera in the hand while elevating on a fastball, to which Tigers starter Rick Porcello retaliated in trying to throw at Victor Martinez. In the next inning Cabrera was forced to leave the game due to his hand continuing to ail him. The first pitch thrown by Porcello in the bottom of the second inning hit Kevin Youkilis causing him to charge the mound, clearing both the benches and leading to the ejection of Youkilis and Porcello. Tazawa would go on to pitch five innings, winning the game while giving up one earned run and striking out six. With his start, Tazawa became the second youngest Japanese pitcher to start in a major league game. Tazawa's second start came against the Texas Rangers. He pitched five innings, giving up four runs on 10 hits and three walks and taking the loss. In his third start, against the New York Yankees, Tazawa pitched six scoreless innings, allowing eight hits, two walks and striking out two in the win.

In April 2010, Tazawa underwent Tommy John surgery on his right elbow and was knocked out for the entire 2010 season. He began the 2011 season on the 60-day disabled list but eventually returned to pitch in three games for the Red Sox in 2011.

Tazawa started 2012 in Triple-A Pawtucket before being called up to Boston on April 18 to replace the struggling Mark Melancon. Tazawa was optioned back to Triple-A on May 1. Tazawa was one of the rare bright spots in a dismal 2012 season, posting a 1.43 ERA in 44 innings. On April 26, 2012 against the Chicago White Sox, Tazawa tossed three scoreless innings for his first career save. Tazawa struggled in his first season, going 3-5 with a 5.69 ERA in 55 appearances.

Tazawa was designated for assignment on May 18, 2018, and was released on May 21. He had a 9.00 ERA in 22 appearances at the time of his release.

Detroit Tigers

On June 3, 2018, Tazawa signed a minor league deal with the Detroit Tigers. On July 9, he was released by the Toledo Mud Hens, the Triple-A affiliate of the Tigers.

Los Angeles Angels On July 13, 2018, Tazawa was signed by the Los Angeles Angels on a minor-league contract. He was promoted to the major leagues on September 1, 2018. He became a free agent after the season ended. He was released on March 24. He re-signed with the Cubs on March 26. Tazawa was later released again on July 11.

Cincinnati Reds On August 11, 2019, Tazawa signed a minor league contract with the Cincinnati Reds and was assigned to the Double-A Chattanooga Lookouts. He was released by the organization prior to the season on March 10, 2020. On March 17, 2021, Tazawa made his CPBL debut.

Tazawa appeared in 58 CPBL games during the season. As the Dragons' Closing Pitcher, he earned 30 saves and an ERA of 3.56. He was not re-signed for the 2022 season and became a free agent.

Generales de Durango On May 4, 2022, Tazawa signed with the Generales de Durango of the Mexican League. He was released on June 23. In 13 games 12.2 innings of relief he struggled horribly going 2-1 with a 12.08 ERA with 11 strikeouts and 3 saves.

ENEOS On September 7, 2022, Tazawa signed with ENEOS, a team in the semi-pro Japanese Industrial League where he once played. After graduating from high school, Tazawa led ENEOS to the 2008 Intercity Baseball Championship, and won the MVP Hashido Award. While playing in Boston, Tazawa had used his ties to ENEOS to help the Red Sox cash in on a sponsorship deal with the Japanese motor oil company.

Saitama Musashi Heat Bears On February 16, 2026, Tazawa signed with the Saitama Musashi Heat Bears of the Baseball Challenge League.

Pitching style Tazawa has three main pitches that include a 92-95 mph fastball (tops out at 97 mph), a curveball (73–77 mph), and a forkball/splitter (86–88 mph).