Aaron Helmer Sele (born June 25, 1970) is an American former Major League Baseball (MLB) right-handed pitcher.

[6][7] Sele was drafted out of high school in the 37th round by the Minnesota Twins, but he chose to attend Washington State University where he played college baseball for the Cougars and head coach Bobo Brayton.

His 121 strikeouts, 10 complete games, and 121+2⁄3 innings pitched all rank second for a single season in school history.

[12] Sele led the American collegiate national team with 5 wins, 10 starts, 53 strikeouts, and 52 innings pitched.

[9] The Boston Red Sox selected Sele in the first round with the 23rd overall pick of the 1991 Major League Baseball draft.

[17] Sele joined the Red Sox on June 22 after ace Roger Clemens was placed on the disabled list.

[18] Sele made his major league debut the following night, allowing 1 run in 7 innings in a win over the Minnesota Twins.

Boston's Mo Vaughn, having rushed to the mound from first base, tackled Bell to the ground.

[24][25] In his final start of his rookie season, Sele struck out a season-high 11 batters, earning a win over the Detroit Tigers.

His threw complete games in consecutive starts on May 11 against the Milwaukee Brewers and on May 18 in Baltimore against the Orioles.

[27] He finished his second MLB season ranking second on the Red Sox in starts, complete games, innings, and strikeouts, tying for second in wins.

[28] Sele was the Red Sox's Opening Day starter in 1995, throwing five scoreless innings on April 26 against Minnesota in a 9–0 win.

After two disastrous starts, allowing 13 earned runs while getting just 13 outs, he went 4–1, 3.93 in a span of 5 outings from June 12 to July 3.

[16] Sele was traded to the Texas Rangers with Mark Bradenburg and Bill Haselman on November 6, 1997 for Damon Buford and Jim Leyritz.

[34] After a rough two month stretch, with a 5–7 record and 6.46 ERA from June 13 to August 14, Sele finished 1998 strong.

[40] For the second straight year, Sele lost to the Yankees in the ALDS, giving up 3 earned runs in five innings in an 8–0 loss in Game 1.

[1] On January 7, 2000, Sele agreed to a four-year, $29 million contract with the Baltimore Orioles, pending the results of a physical.

[41] Orioles owner Peter Angelos wasn't satisfied with the "moderate wear and tear" in Sele's right shoulder and attempted to restructure the deal to three years and $21 million.

[42] Sele instead returned to his home state and signed a two-year, $15 million contract with the Seattle Mariners three days later on January 10.

[48] He continued his postseason losing streak to the Yankees, allowing 4 runs in 6 innings in Game 3 of the American League Championship Series (ALCS).

He had a career 0–6 record in the playoffs with a 4.46 ERA in 7 postseason starts, pitching past the sixth inning only once.

The Angels beat the San Francisco Giants in the 2002 World Series, but Sele did not pitch in the postseason or for much of the end of the regular season.

[54] He underwent surgery on October 18, one day before the World Series began, to repair the injury.

[16] He finished his final season with the Angels with a 9–4 record and 5.05 ERA in 24 starts and four relief appearances.

[62] He made two starts for the Triple-A Oklahoma City RedHawks, allowing 11 earned runs in 12+1⁄3 innings.

His final career start was on September 3, when he allowed 6 runs in 4+1⁄3 innings to the visiting Colorado Rockies.

[68] On January 25, 2007, Sele signed a minor league contract with the New York Mets and received a non-roster invitation to spring training.

He pitched in 34 games, tied for his season high, but made no starts for the first time in his career.

[5] In 1993, a man was convicted in North Dakota of forgery after opening a bank account in Sele's name.

After the 2017 season, he left the Dodgers organization to become a special assignment scout for the Miami Marlins.