The incoming players are Jack Grunkemeyer from Northwestern, Nathan Harb from Niagara, Collin Lott from Northern State, and Casey Robertson from Henry Ford Community College. This group of athletes joins 17 others who have already signed to the program for the fall of 2026, with all set to begin competing for the Broncos in the 2027 season.
Jack Grunkemeyer, a 6-3, 215-pound right-handed pitcher, brings two seasons of collegiate experience from his time at Northwestern. During his time with the Wildcats, he appeared in 24 games and recorded 29 strikeouts over 46.2 innings on the mound. Grunkemeyer gained valuable experience by pitching in road games against high-ranked opponents such as number five Georgia Tech and number twenty-one Oregon. As a freshman, he was the most active pitcher on the team, racking up 22 appearances, earning two wins and two saves. In addition to his strong on-field performance, Grunkemeyer maintained academic excellence by being named to the Dean's List both years at Northwestern.
Jack Grunkemeyer's Background
Before attending Northwestern, Grunkemeyer was a standout at Batesville High School in Indiana. He played four seasons as a starting pitcher, earning four conference awards and leading his team to two IHSAA 3A Section titles. In his senior year, he threw a no-hitter and was named District Player of the Year, 3A All-State Honorable Mention, and earned an invitation to the North-South All-Star Game. As a junior, he recorded a 2.03 ERA and 61 strikeouts in just 38 innings. Grunkemeyer was also a four-year honor roll student and four-time Kiwanis Scholar, showcasing his commitment to academic achievement in addition to his athletic prowess.
Nathan Harb, a 5-11 right-handed pitcher from Bothell, Washington, brings two years of experience from his time at Everett Community College. During his time with the Trojans, he was part of teams that won two North Region titles. In 38.0 innings, he recorded a 2.37 ERA, 16 saves, and three wins, with a notable strikeout rate of 11.4 per nine innings. In his most recent season, Harb posted a 1.25 ERA, 10 saves, and 24 strikeouts in 21.2 innings, earning First Team NWAC North honors and All-NWAC Academic Team recognition. Before transferring to Niagara, Harb was a three-year letterwinner for Inglemoor High School, playing under coach Craig Bishop.
Harb's high school career was marked by consistent performance and leadership. He helped his team win region titles and was recognized as a top performer in his area. After beginning his collegiate journey at Everett under coach Keith Hessler, Harb made a name for himself with his strong mound presence and consistent performance. He was highly skilled at striking out hitters, with a career total of 48 strikeouts across two seasons, including a 10.0 strikeout rate per nine innings in his second year with the Trojans.
Collin Lott's Achievements
Collin Lott, a 5-10, 190-pound catcher from Oakland, Michigan, joins the Broncos after a standout season at Northern State. In 2026, he started 40 games and posted a .308 batting average, a .420 on-base percentage, and a .504 slugging percentage. Lott contributed offensively by hitting five home runs, tallying 25 RBIs, and scoring 25 runs. Defensively, he was a rock behind the plate, throwing out 19 runners attempting to steal and maintaining a .981 fielding percentage.
Lott's high school career at Stoney Creek High School in Rochester Hills, Michigan, was marked by excellence both on the field and in the classroom. He played under coach Paul Diegel, where he was named First Team All-League, All-District, All-Region, and All-State as a senior. He hit .357 with three home runs and 23 RBIs, earning an invitation to the MAC vs. OAA All-Star Game. His junior year also saw recognition as an All-League and All-District selection, and as a sophomore, he helped lead the Cougars to a regional title. Lott also earned Academic All-Region honors in 2023 and 2024 before being named Academic All-State in 2025.
Casey Robertson's Versatility
Casey Robertson, a 6-1, 210-pound player who can play both as an infielder and a right-handed pitcher, is another strong addition to the 2027 class. In his most recent season at Henry Ford Community College, Robertson hit .407 with 10 home runs and 62 RBIs, showing his offensive potential. On the mound, he posted a 4.06 ERA in 16 appearances, collecting five wins and seven saves. In his first season at Henry Ford, Robertson hit .329 with five home runs and 33 RBIs, while also recording a 2.08 ERA with two saves in six appearances.
Robertson's ability to contribute in both the field and on the mound gives the Broncos a versatile option for the 2027 season. His strong all-around performance at Henry Ford, combined with his honors from the conference and region, indicates a high level of readiness for the collegiate game. With his combination of power-hitting and solid pitching, Robertson is poised to make an immediate impact as he transitions to Western Michigan.
As the Broncos prepare for the 2027 season, the addition of these four transfers strengthens the program's depth and talent. The four players bring a mix of offensive production, defensive reliability, and pitching strength, each contributing in their own way to the overall potential of the team. With a full roster of 17 student-athletes ready to join the program, Western Michigan is building a strong foundation for future success under the leadership of head coach Billy Gernon.