Daniel Costanza was named the South Bay Storm head coach on April 29th, 2014.

Costanza is currently an assistant coach at Saint Mary's College in Moraga, California. Before taking a position at St. Mary's, he spent the past two years as an assistant coach at Cal State East Bay. While with the Pioneers, Costanza worked both with hitters and infielders, coached first base and helped run the team's strength and conditioning program. In 2013, the Pioneers went a school-best 32-18 and had three infielders earn all-conference honors.

Prior to his stint at Cal State East Bay, Costanza served for two seasons as a hitting and infield coach at York College in Nebraska where he worked with junior varsity hitters and infielders. 

Before becoming a coach, Costanza played for two years at York College under 2009-2010 MCAC coach of the year Nick Harlan. He was the starting second baseman on back-to-back MCAC Championship Teams in 2009-10 and 2010-11.

Costanza played a total of 102 games and finished with a career batting average of .312 with 19 doubles, 4 home runs, 50 RBI, and 48 runs. The slick fielding infielder made only 12 errors throughout his career at York.