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The Ridgefield High girls basketball team is entering the postseason with a new head coach.

Citing personal reasons, Tom DiMarzo unexpectedly resigned as the Tigers' head coach this week. DiMarzo, who was in his fifth season, guided Ridgefield to a Fairfield County Interscholastic Athletic Conference championship in the 2014-15 season.

"Just want to be with my family," DiMarzo wrote in a text message earlier tonight when asked why he had stepped down. "Personal reasons is all I am saying."

DiMarzo said that assistant coach Anthony Hill is taking over as head coach for the rest of the season. Ridgefield plays Trumbull in an FCIAC quarterfinal playoff game this Saturday (2 p.m.) at Fairfield Ludlowe High School.

Ridgefield High Athletic Director Dane Street was not immediately available for comment on DiMarzo's resignation.

In his first season as head coach, DiMarzo led Ridgefield to its first conference championship in 19 years. The Tigers finished the 2014-15 season with a 21-4 record, losing to Greenwich in the second round of the Class LL state tournament.

Ridgefield qualified for the conference and state tournaments in all five of DiMarzo's seasons as head coach.

The Tigers finished the regular season with a 48-34 road loss to unbeaten Norwalk on Wednesday night. Ridgefield (11-9) is seeded seventh in the FCIAC tournament and plays second-seed Trumbull in the quarterfinals on Saturday.

DiMarzo did not respond when asked if he was staying on as a fifth-grade teacher at Scotland Elementary School in Ridgefield. As of Thursday night, DiMarzo was still listed on the school's staff directory.