Jim Hallman, Owner
Mick Delaney, Manager
Mick has been at Grand Slam since 2014. He is in charge of the day to day office operations as well as doing both group and individual lessons. Mick averages over 20 hours of lessons per week doing both hitting and catching lessons, as well as working with High School Softball teams for their offseason hitting programs. Throughout the year Mick has over 70 clients he works with for both Baseball and Softball. He is entering his 12th year as a High School Baseball coach. For 5 years Mick was the Varsity Hitting and Catchers Coach at Urbandale High School helping lead the J-Hawks to back to back State Championships in 2018 and 2019. He is in his third year as the Varsity Hitting and Catchers Coach at Northwest High School in Waukee.
Photo Credit: Alli Stuhr Photography
Photo Credit: Alli Stuhr Photography
Photo Credit: Alli Stuhr Photography
Mike Joseph, Instructor (hitting and catching), Slammers Coach and Staff
Mike is beginning his 6th year instructing with Grand Slam serving as our lead catching instructor. Mike graduated from Dowling Catholic High School and went on to play college baseball at St. Olaf College in Northfield, Minnesota. He has an extensive coaching background at the high school and club levels, having coached at Roosevelt, Dowling Catholic, and currently serving as assistant coach with Jim's 18U Iowa Slammers fastpitch club.
Mike is also the manager of Grand Slam Strength, the Strength and Conditioning program.
Outside of Grand Slam, Mike is married with 4 children and works full time home remodeling and carpentry.
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Luc Farren, Instructor
Luc joined the Grand Slam staff in August of 2022, serving as a hitting instructor, running many of our youth hitting clinics as well as individual lessons. He also assists in the Grand Slam Baseball Club, running practices for several of our teams. Luc is originally from Illinois, coming to Iowa to play baseball at Central College. At Central, he was a team captain for 3 years, and assisted in leading individual and group hitting and fielding development sessions.
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Trey Widhlam, Instructor
Trey played Shortstop at Pleasant Hill High School in Missouri. He played college ball for three years at Grand View University as an outfielder before retiring due to a shoulder injury. He is currently a student coach for Grand View, and coaches at US National in KC, MO.
Brock Sailer, Instructor
Brock joined the staff last year, instructing many of our Pitching and Fundamentals clinics, as well as offering individual lessons in those areas. He also coaches for the Grand Slam fall league. Brock graduated from Waukee High School. He went on to pitch collegiately at Iowa Central CC and earned his associate degree. Brock then went to Grand View University to continue playing baseball and finish getting his bachelor’s degree in liberal arts. Outside of Grand Slam, Brock enjoys spending time with his girlfriend, friends, and family, taking in what life has to offer.
Jesse Correll, Instructor, Slammers Coach and Staff
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Anthony Moist, Player, Instructor, and Student of the Game
Anthony is a dedicated redshirt freshman at Grand View University, where he continues to pursue his academic and athletic goals. As a passionate baseball enthusiast, Anthony has also established himself as a front desk manager and a baseball and softball instructor at Grand Slam USA, marking his third year as a valued employee.
Under the mentorship of Jim Hallman, Anthony has gained hands-on, professional teaching experience, learning how to effectively communicate and instruct young athletes. His current role as an assistant coach at Grand View further enhances his understanding of coaching techniques, emphasizing the importance of teaching players how to learn and understand the game rather than simply telling them what to do. Anthony believes that guiding players through personalized instruction is crucial to their development and future success on and off the field.
A former three-year varsity starting pitcher in high school, Anthony made a significant impact on his team. During his junior year, he achieved 13 starts with an impressive sub-2 ERA, ranking him among the top 25 pitchers in the state of Iowa. Now pitching at the collegiate level, Anthony is eager to continue developing his skills and compete at a high level.
Beyond his athletic pursuits, Anthony is committed to giving back to the sport that has provided so much for his family. His passion for baseball, combined with his dedication to teaching and mentorship, drives him to help others succeed both on and off the field.
Hailey Askland, Softball Pitching and Hitting Instructor
Hailey is a softball pitching and hitting instructor who has been around the game for most of her life. She began playing tee-ball as a young athlete and continued competing through her junior year of high school, and even after taking a year off from playing, she jumped right back into the sport when her daughter started softball and has never left the game since.​​
Although Hailey chose not to play college softball, her talent in the circle earned her about 10 full-ride scholarship offers, including an opportunity to pitch at South Dakota. Instead of pursuing those offers, she focused on giving back to the game by helping with pitching and hitting for the last two teams her daughter has played on, building a strong reputation for her ability to teach and encourage young players.​
Hailey holds a coaching degree and has accumulated valuable experience working on various coaching staffs. Her passion is helping athletes grow in confidence and fundamentals, using her own playing background and coaching education to make pitching and hitting mechanics understandable and repeatable for every player she works with.​
Ryan Hulse, Hitting Instructor
Ryan graduated from Grand View in 2025 and is currently persuing a Masters Degree while playing baseball. He has coached 12U teams for Iowa Sticks the last two summers
Kaleb Krier, Instructor
Kaleb played high school ball at Southeast Polk (all state) and played collegiately at DMACC (All Conference), Valparaiso, and Grand View University (Conference pitcher of the year). He currently coaches at Grand View.
Kaleb's is experienced in primarily pitching instruction, along with fielding (infield/outfield) and hitting. His passion for for baseball and youth athletes will help them become the best version of themselves.