The club elected to use Major League Soccer's World Cup break to hit the reset button and change leaders.
Hackworth took over from the club's innagural manager, Peter Nowak, midway through the 2012 season and accumulated a 23-30-20 record. He was unable to take the club to the playoffs in 2012 or 2013, and the club currently sits out of the postseason places in the Eastern Conference, though it sits three points below the New York Red Bulls and shares the conference lead in goals scored.
The Union were hoping for more this season, though, acquiring midfielders Maurice Edu from Stoke City, Cristian Maidana and Vincent Nogueira. The club also swapped forward Jack McInerney, getting Andrew Wenger in exchange.
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“We are an ambitious club and although we are just in our fifth season we expect to win and be in the top tier of MLS. We have begun an ambitious and global search for a team manager who will help guide us to our goal of competing to win the MLS Cup," Philadelphia Union CEO and operating partner Nick Sakiewicz said in a news release.