For Aaron Holst, getting his 300th win as the Excelsior Springs varsity baseball coach with a 13-5 thumping of Raytown April 28 was a reflection of how he has spent part of his adult life. “I think it’s mainly a sign that I’ve been doing this a long time,” Holst said minutes after achieving the milestone at Tiger Stadium. “It’s a longevity thing. … It’s just a proud thing for me that all of them have been right here at Excelsior Springs, and I love this place.” Holst also saw the milestone as a reflection of the players who’ve been in the program – a program that has posted four 20-win seasons since 2018, when the Tigers placed third in the state in Class 4. “I’ve been blessed with good players,” he said. Over the years, those players have included his son Simon, now an assistant coach under his dad and head of Excelsior Springs’ junior varsity program. The current crop of players who helped the elder Holst get win No. 300 include firstyear high schoolers Kaelan Bedford and Cooper…