Shawn Patrick Sedlacek [sed′–la–check] (born June 29, 1977) is an American former professional baseball pitcher.

He played part of one season in Major League Baseball (MLB), primarily as a starting pitcher, for the Kansas City Royals in 2002.

[3] Shawn played Babe Ruth League baseball while growing up, getting instructed on pitching from local resident Gary Ray.

[1][4] Sedlacek attended Indian Hills Community College for two years, then transferred to Iowa State University, which offered him a baseball scholarship.

During the season, he was promoted to the Omaha Golden Spikes of the Triple-A Pacific Coast League (PCL).

[17] On July 4, Sedlacek had one of the best starts of his career; he allowed one run in a career-high seven innings, receiving a no-decision in a 3–2 loss to the Oakland Athletics.

[18][19] His first career win came on July 15, in the first game of a doubleheader, when he gave up three runs in six innings as the Royals defeated the Texas Rangers 8–6.

[20] Five days later, he tied his career high with seven innings pitched and allowed just two runs, but he received a no decision in a 5–3 loss to the Cleveland Indians.

[22] Sedlacek attributed his struggles to fatigue, as he was in the process of setting a new career high in innings pitched (183).

[24] He got off to an 0–6 start, not winning a game until May 17, when he allowed three runs (one earned) over 6+1⁄3 innings in a 7–3 victory over the Iowa Cubs.

[1] He started one game for the PCL's Colorado Springs Sky Sox before getting traded to the St. Louis Cardinals on April 17.

[1][10] In five games (three starts) for the PCL's Memphis Redbirds, he had a 1–2 record, a 10.80 ERA, and 11 strikeouts in 15 innings before getting released on May 18.

[10] His contract was sold to the Baltimore Orioles on August 26, and Sedlacek made two starts for the Triple-A Ottawa Lynx of the International League, losing both of them and posting an 11.00 ERA.

"[10][23] While with the Royals, he formed a friendship with Mike Boddicker, a former MLB pitcher who also was not a hard thrower in his career.

[29] Initially beginning a career in financial services in retirement, Sedlacek wanted to remain active in baseball.

Originally, the organization offered pitching lessons to amateurs and professionals in the Kansas City metro area.