His contentious relationship with team owner Peter Angelos began in April when the latter strongly objected to Wren's attempt to dismiss manager Ray Miller. Wren's signings of Mike Timlin and Xavier Hernandez, the latter of which was rescinded and involved a $1.75 million settlement, were criticized by Angelos who alleged that both pitchers had been injured. Wren's dismissal on October 7, 1999 was the result of a September 17 incident when he ordered the Orioles' chartered jet to take off without Cal Ripken Jr. who had phoned the team earlier to inform them he was going to be a few minutes late because he was stuck in traffic. He was succeeded by veteran executive Syd Thrift. Atlanta Braves Wren then joined the Braves as top assistant GM to longtime Atlanta GM John Schuerholz, a position that he held for eight seasons. On October 11, 2007, Schuerholz was named president of the Braves and Wren was promoted to executive vice president and GM, signing a four-year contract. Wren was known for developing a strong farm system. Wren was released by the Braves on September 22, 2014, a day after the Braves were eliminated from playoff contention. In his tenure as general manager, Wren made some effective trades to acquire a resurgent Javier Vázquez in 2009, Michael Bourn in 2011, and Justin Upton in 2013. But some free agent signings did not go as well. Derek Lowe was signed to a 4-year, $60 million deal in 2009, but struggled in 2011, before being traded to the Cleveland Indians. Kenshin Kawakami was signed from the Chunichi Dragons of Nippon Professional Baseball in 2009. He spent two years with the Braves and posted an 8-22 record with a 4.32 ERA. Wren traded for Dan Uggla in the 2010 offseason and signed him to a 5-year, $62 million contract. Uggla did well for two years, then slumped before being released in 2014. Melvin Upton joined the Braves on a 5-year, $75.25 million contract in 2013, but struggled through his two-year stint with the team before being traded to the San Diego Padres in April 2015. The money committed to Upton was Wren's most expensive deal. Boston Red Sox The Boston Red Sox named Wren the team's senior vice president of baseball operations on September 25, 2015. He succeeded Mike Hazen, who had been promoted to general manager. Wren was dismissed from the Red Sox in