2005 Randolph High School graduate and former Twins pitcher Caleb Thielbar was born on January 31, 1987. Both of Caleb’s parents lettered in baseball at Randolph HS. His mom, Janet (Johnston), was the Rockets’ starting shortstop in 1976. His dad Calvin was the assistant coach of that team.
In addition to baseball, Caleb Thielbar excelled in basketball at Randolph HS. He was the second-leading scorer in school history, and number one in three-pointers and free-throw percentage at the time of his graduation.
He went on to pitch four season at South Dakota State University, and was drafted by the Milwaukee Brewers in the 18th round of the 2009 draft. He was released by Milwaukee in December 2010. He pitched for the St. Paul Saints in 2011, striking out 62 batters in just 49 ⅔ innings (43 appearances). On August 18 he became the first-ever Saints player signed by the Minnesota Twins.
Thielbar rose rapidly through the Twins system, and made his major league debut on May 5, 2013 at age 26, beginning a historically successful rookie season. He did not allow a run in his first 17 big league appearances. He earned his first win on June 1, pitching a 1-2-3 top of the ninth with the Twins trailing the Mariners 4-2. The Twins mounted a comeback in the bottom of the inning, culminating in Joe Mauer scoring from first on a Ryan Doumit walk-off triple.
Thielbar finally allowed his first run on July 8, giving up a solo homer to Tampa Bay’s Ben Zobrist. He finished the season 3-2 with a 1.76 ERA and 0.826 WHIP over 48 appearances (46 innings pitched).
He appeared in 54 ballgames in 2014, posting a 3.40 ERA. He appeared in just 6 games in 2015 before being claimed off waivers by the Padres on August 8. He has not pitched in the majors since.
Thielbar returned to the St. Paul Saints in 2016, going 5-2 with a 2.39 ERA over 64 innings (42 appearances). He went 2-1 with a 2.01 ERA and 0.761 WHIP in 22.1 innings (17 appearances) with the Saints in 2017. His contract was purchased by the Detroit Tigers on January 23, 2018.
Patrick Reusse wrote a great article about Thielbar prior to his rookie season with the Twins (here).