|High School:||Neumann Janos Secondary|
Simply put, 2012 was a banner year for Erdelyi. He became the first player in school history to be named the MPSF Player of the Year after leading the conference with 83 goals and an average of 3.46 goals per game. The Hungarian native was also just the second player in program history to be nominated for the prestigious Peter J. Cutino Award, given annually to the nation's top water polo player. He also earned First Team All-America honors from the ACPWC for the second consecutive season. All told, Erdelyi racked up 21 multi-goal games on the year, including five four-goal outings, four five-goal showings and a pair of six-goal performances. He set a new career high with nine scores in Pacific's rout of Santa Clara on Oct. 21, the most in a single game since at least 1997. Erdelyi earned MPSF Player of the Week honors after scoring four goals in each of Pacific's wins over UC Irvine and Long Beach State, and was named to the MPSF All-Tournament Team after guiding the Tigers to their second consecutive sixth-place finish at the tournament. Outside of the pool, Erdelyi was named to both the ACWPC All-Academic Team and the MPSF All-Academic Team for the second consecutive season.
One of the most well-rounded players in the country, Erdelyi cemented his place among the nation’s elite with a stellar sophomore season. Appearing in 25 games for the Tigers, he finished with 56 goals and a 2.24 goals per game average, both of which were good for fourth in the MPSF. He scored in all but one of the games in which he appeared, registering 18 multi-goal games, good for tops on the team. He tied his career high with five goals versus Pepperdine on Oct. 2 and went for four goals against UC Santa Barbara that same day. Not just a scoring threat, Erdelyi recorded 41 steals, 42 assists, 37 drawn ejections and 18 field blocks on the year. He was awarded Association of Collegiate Water Polo Coaches First Team All-America honors, and was also selected to the All-MPSF First Team. Academically, he earned ACWPC Academic All-America and MPSF All-Academic honors.
Erdelyi made an immediate impact in the pool for the Tigers, recording 52 goals in 28 games while tallying 60 assists, 48 steals, 19 field blocks and 26 drawn ejections. Eight times during his first year at Pacific, he tallied three or more goals, including a five-goal performance against UCLA on October 3. At the end of his freshman campaign, he became the third Tiger in program history to be named MPSF Newcomer of the Year in addition to earning All-MPSF Second-Team honors. Erdelyi was also named to the Association of Collegiate Water Polo Coaches All-America team as well as the ACWPC All-Academic team. In January of 2011, Erdelyi was recognized as a Pacific Scholar Athlete.
Erdelyi graduated from Neumann Janos Secondary and Boarding School, in Eger, Hungary.
Erdelyi was born in Eger, Hungary, and is the son of Gyorgy Erdelyi and Ildiko Kiraly. He has an older sister, Nikolett. Erdelyi was a three-time Hungarian Junior Championship winner from 2007-09. In 2007, Erdelyi was a member of the European Junior Championship team in Malta and was voted the Water Polo Player of the Future. He has also been a member of the Hungarian Senior National team since 2008. In his second year at Pacific, Erdelyi is majoring in business.