College baseball is baseball that is played on the intercollegiate level at institutions of higher education. In comparison to football and basketball, college competition in the United States plays a smaller role in developing professional players, as baseball's professional minor leagues are more extensive, with a greater history of supplying players to Major League Baseball (MLB). Moving directly from high school to the professional level is more common in baseball than in football or basketball. However, if players opt to enroll at a four-year college, they must complete three years of college to regain professional eligibility, or have turned at least age 21 before starting their third year of college. Players who enroll at junior colleges (i.e., two-year institutions) regain eligibility after one year at that level. During the ongoing regular season, 301 teams have competed in NCAA Division I in the United States, with top teams progressing through the regular season, various conference tournaments and championship series, and the 2023 NCAA Division I baseball tournament to play for the Division I championship in the 2023 Men's College World Series. As with most other U.S. intercollegiate sports, competitive college baseball is played under the auspices of either the NCAA, the NAIA, the NJCAA, the CCCAA, or the NWAC. The NCAA writes the rules of play, while each sanctioning body supervises season-ending tournaments. The final rounds of the NCAA Division I tournament is known as the Men's College World Series (MCWS); while each of the three levels of competition sanctioned by the NCAA holds a championship tournament, the "Men's College World Series" branding is reserved strictly for the final round of the Division I tournament. The CWS takes place in Omaha, Nebraska in June, following the regular season. The playoff bracket for Division I consists of 64 teams, with four teams playing at each of 16 regional sites (in a double-elimination format). The 16 winners advance to the Super Regionals at eight sites, played head-to-head in a best-of-three series.