Sewald attended Bishop Gorman High School in Las Vegas, Nevada. In 2008, his senior year, he had a 7–0 win–loss record with a 1.57 earned run average (ERA), earning All-State honors.^[1]

Undrafted out of high school in the 2008 MLB draft, Sewald enrolled at the University of San Diego and played college baseball for the San Diego Toreros.^[2] As a senior in 2012, he pitched to an 8–4 record with a 3.09 ERA in 15 games (14 starts).^[3]

New York Mets edit

The New York Mets selected Sewald in the tenth round of the 2012 MLB draft.^[4] They gave him a $1,000 signing bonus.^[5] After signing, Sewald made his professional debut that same season with the Brooklyn Cyclones of the Class A-Short Season New York-Penn League where he was 0–2 with a 1.88 ERA in 28+2⁄3 relief innings pitched. He pitched in the 2013 season with the Savannah Sand Gnats of the Class A South Atlantic League,^[6] compiling a 3–2 record and 1.77 ERA in 35 relief appearances.

Sewald began the 2014 season with the St. Lucie Mets of the Class A-Advanced Florida State League and was promoted to the Binghamton Mets of the Class AA Eastern League during the year. In 43 appearances out of the bullpen between two teams, he was 5–1 with a 1.92 ERA. After the regular season, he played in the Arizona Fall League.^[7] In 2015, he played for Binghamton and pitched to a 3–0 record and 1.75 ERA in 44 games. During the season, he pitched for the United States national baseball team at the 2015 Pan American Games, earning a silver medal.^[8] In 2016, he played for the Las Vegas 51s of the Class AAA Pacific Coast League^[9][5] where he was 5–3 with a 3.29 ERA in a career high 65+2⁄3 innings pitched.^[10]

On April 8, 2017, the Mets promoted Sewald to the major leagues.^[11] He made his MLB debut the same day against the Miami Marlins at Citi Field and allowed two runs in a third of an inning.^[12] He was optioned back to Las Vegas on April 13 and recalled again on May 1. After his May 1 recall, he spent the remainder of 2017 with the Mets. In 57 relief appearances for New York, he was 0–6 with a 4.55 ERA and a 1.21 WHIP. He was designated for assignment on May 26, 2019. On August 16, the Mets selected Sewald's contract.

On September 24, 2019, Sewald earned his first MLB win in a walk-off win against the Miami Marlins, ending his streak of 118 major-league appearances without a win, the second-longest such streak in MLB history.^[13] With the win, he also ended his 14-game losing streak, the longest losing streak to start a career in NL history.^[14] In 2020, Sewald struggled to a 13.50 ERA over 6.0 innings of work.^[15] On December 2, 2020, Sewald was non-tendered by the Mets.^[16]

Seattle Mariners edit

On January 7, 2021, Sewald signed a minor league contract with the Seattle Mariners organization.^[17] Sewald started the 2021 season playing for the Triple-A Tacoma Rainiers, where he initially struggled but found his footing a week into the season, striking out 10 batters in 4+1⁄3 innings.^[18] On May 13, 2021, Sewald was selected to the active roster.^[19] In his Mariners debut, Sewald earned the win while striking out four batters.

Sewald enjoyed a breakout season with the Mariners in 2021 due in large part to his improved pitch usage.^[20] Writing for 710 ESPN Seattle, Brandon Gustafson described him as "a force" and "the biggest surprise star" of Seattle's bullpen. Sewald admitted in an interview with the station that he had exceeded even his own expectations.^[21] Sewald had a 10–3 record with an ERA of 3.06 in 62 games and 64+2⁄3 innings while striking out 104 batters in 2021.

In 2022, Sewald again flourished with the Mariners, posting a record of 5–4 with a 2.67 ERA and 20 saves in 64 innings. In May of that year, Sewald played against the Mets at Citi Field, getting out of a two-runner-on jam in the seventh and working a clean inning against the top of the Mets' lineup in the eighth in a 2–1 win. Sewald would go on to say during post-game interviews that he felt that the Mets "gave up" on him and that it felt nice to "get revenge" on the team.^[22]

On January 13, 2023, Sewald agreed to a one-year, $4.1 million contract with the Mariners, avoiding salary arbitration.^[23]

Arizona Diamondbacks edit

On July 31, 2023, Sewald was traded to the Arizona Diamondbacks in exchange for Ryan Bliss, Dominic Canzone, and Josh Rojas.^[24]

Sewald's father, Mark, is a former college baseball pitcher^[25] who was drafted out of high school by the Boston Red Sox in 1979.^[26] Sewald's parents are accountants. He received his bachelor's degree in accounting from the University of San Diego.^[27] Sewald's younger brother, Johnny, an outfielder, was selected in the 14th round of the 2015 MLB draft out of Arizona State University by the Houston Astros.^[28]

Sewald met his wife, Molly, while he was pitching in the Arizona Fall League and she was at Arizona State University. Their first child, a daughter, was born in August 2021.^[20]

• Career statistics and player information from MLB, or ESPN, or Baseball Reference, or Fangraphs, or Baseball Reference (Minors), or Retrosheet
• San Diego Torreros bio Archived November 8, 2016, at the Wayback Machine
• Paul Sewald on Twitter
• Paul Sewald on Instagram