Coach Costello is entering his 4th season with the Retrievers, the pitching coach achieved notable success with a regular season ERA of 5.01, the best in the conference in 2024. . This performance was part of a broader trend, as the coach also established the lowest ERA in the America East Conference over the 2023-2024 seasons, with a mark of 5.12. In 2023, Coach Costello helped the team set a school record with 420 strikeouts. A key player under this coach's guidance was Luke Johnson, who earned the America East Pitcher of the Year award twice, became UMBC's career leader in strikeouts and starts, and was drafted in the 10th round by the Washington Nationals. Coach Costello's efforts led to a significant improvement in team performance, as the staff ERA was reduced by over 1 run from 2023 to 2024.
