Heading into the offseason, the Tigers had already announced their intention to move Carlos Guillen, which meant the Tigers had to find a replacement at shortstop.
Last season, Renteria hit .332 for the Braves while playing as the team's everyday shortstop. He also had 30 doubles and 12 home runs. Renteria is under contract through 2008, with a club option for 2009 at $11 million.
Jurrjens, 21, made his big league debut in 2007, making seven starts while posting a 3-1 record and a 4.70 ERA. Jurrjens was expected to compete for a spot in the Tigers' rotation in the spring.
Hernandez, 20, finished his first full season with the West Michigan Whitecaps. For the year, he hit .293 with 25 doubles and 54 stolen bases.