Tom Marker will have the tough task of replacing a hall of famer.

Pending school board approval, Marker will leave Upper Arlington to become the baseball coach at Olentangy Orange High School. He will succeed Phil Callaghan, a member of the Ohio High School Baseball Coaches Association Hall of Fame who resigned May 23.

Orange announced Marker’s hiring June 5.

“Is there any replacement for Phil Callaghan?” Marker asked. “I don’t think so.

“My house is 1.9 miles door-to-door to the (Orange) middle school, where I will be teaching math. UA is an unbelievable place with great players, a great administration, great parents and a great community, but this allows me to coach, have less travel time and more time with my family.”

Callaghan was 173-56 in eight seasons at Orange. He also coached at DeSales and Dublin Scioto and has a career record of 633-223 over 29 seasons.

Marker has an impressive record of his own. The 1999 Steubenville graduate is 197-130 with stints at UA (2015-18), Bexley (2010-14) and Independence (2006-08). He was the pitching coach at Grove City in 2009.

“It was a great family move for Tom, and we’re excited for him and excited to have him,” Orange athletics director Buck Weaver said. “He’s taking over for Phil, but the nice thing about that situation is that he has the full support of Phil, who will be there as a resource any time he wants.”

Orange finished 16-12 this season, losing to eventual Division I state champion Olentangy Liberty 2-1 on May 16 in a district semifinal.

Upper Arlington lost to Lancaster 8-5 in a district final May 17 to finish 21-8.