"It definitely feels like I'm at a new school," said Leroux, "but it's just a new chapter in my life. I was definitely surprised, but I'm happy. This is a fresh start with a new team. I'm happy to be here."
Until now, Leroux has known only one organization. He was drafted by the Marlins in 2005 and ascended through Florida's system before making his Major League debut in May 2009.
Manager John Russell said that he plans to ease in Leroux by using him in less-pressured situations. Leroux allowed 14 earned runs in 18 innings for the Marlins this year and has posted an 8.03 ERA in 22 big league games.
"I feel like I belong here and can do better," he said. "That's what I'm hoping to do in Pittsburgh."