Last season, Rehkamp scored four goals and assisted on nine others and registered 25 penalty minutes in 26 games with the Royals. Rehkamp began the year with Reading and registered 10 points (3g-7a) in his first 18 games with the team, earning in late November what proved to be a 41-game call up to the Lehigh Valley Phantoms of the American Hockey League, where he tacked on three points (1g-2a) and 16 penalty minutes during his first career trip to the AHL. Rehkamp was returned to the Royals on March 21, and completed the regular season with Reading. He then finished the year by playing in 13 of the Royals’ 14 playoff games, scoring his first pro playoff goal and assisting on two others.
Rehkamp kicked off his pro career late in the 2014-15 season when he joined the Royals in early April of 2015 after the completion of his senior season at St. Cloud State University. In that stint, Rehkamp played three games with the Royals without registering any points and penalty minutes. Prior to joining Reading, Rehkamp put up career numbers at St. Cloud, registering 19 points (5g-14a) and 16 penalty minutes in 38 games for the Huskies, who earned a berth in the NCAA tournament but were eliminated in the West Regional by the University of North Dakota. A two time All-NCHC Academic Award recipient, Rehkamp recorded 31 points (8g-23a) and 44 penalty minutes in 116 career games at St. Cloud.