Named an assistant captain for the club, Holding has appeared in every game in team history. He led the Seals in loose balls the previous two seasons and added nine goals. He is also a major part of the team’s grassroots and community relations efforts in the San Diego community. The defenseman was selected by San Diego in the 2018 NLL Expansion Draft.

He made a name for himself in 2015, leading all NLL defensemen in assists and short-handed assists while finishing second in points. Holding was named the 49th best player in the NLL by ILIndoor in October 2015, marking the first time in his career that Holding made the publication’s list of the Top 50 players in the league.