In 1910, Falls City first fielded a minor league team., when the Falls City Colts were formed and became charter members of the six–team Missouri-Illinois-Nebraska-Kansas League, known informally as the MINK League. Falls City was joined in the Class D level league by the
Auburn Athletics,
Clarinda Antelopes,
Maryville Comets,
Nebraska City Forresters and
Shenandoah Pin Rollers teams as charter members. The Falls City Colts franchise was formed and reportedly built their roster when the franchise purchased 14 players from the salaried Atchison team at the price of $50.00. The local newspaper, the
Falls City Journal, urged the town residents to support the Colts in their initial season. Seating was erected at Athletic Park under the direction of Milt Bohrer. The grandstand had seating for 500 and bleachers along both baselines increased the capacity to more than 1,000. On opening day, May 19, 1910, forty local Falls City businesses closed early and schools dismissed early. Falls City Mayor Keeling threw out the ceremonial first pitch with 1,101 fans in attendance. The Colts defeated the Nebraska City Forresters 3–0 to win the home opener. In their first season, the 1910 Falls City Colts won the Missouri-Illinois-Nebraska-Kansas League championship. Continuing play in 1911, the Falls City Colts placed second in the Missouri-Illinois-Nebraska-Kansas League final standings. In 1912, Falls City placed second in the six–team Missouri-Illinois-Nebraska-Kansas League standings after a championship battle with the Nebraska City Forresters. The Colts, managed by Tony Vanderhill, ended the 1912 season with a record of 61–41, finishing 1.5 games behind Nebraska City who finished 61–38. During the season. In their final season, the 1913 Falls City Colts folded, which resulted in the rest of the Missouri-Illinois-Nebraska-Kansas League permanently folding. Nebraska
Sunday laws of the era were a factor impacting the success of the league. In 1913, Falls City moved Sunday home games to Kansas in an effort to avoid the restrictive laws in Nebraska. On June 17, 1913, the Falls City Colts and Humboldt Infants franchises both disbanded, causing the four–team MINK league to collapse. The Falls City ended their final of the Missouri-Illinois-Nebraska-Kansas League season with a record of 13–19 and were in third place when the league folded. Ira Bidwell served as manager, as the Colts were 11.0 games behind the first place Auburn Athletics. Falls City has not hosted another minor league franchise. ==The ballpark==