December 2004, Wilson was hospitalized for an appendectomy. Despite the setback, he was optimistic at spring training . At 6-foot, 175-pound, Wilson had regained six of the 15 pounds he lost. However, he started the season poorly, hitting just .163 in April and .227 for the first half of the season, and acknowledged that he had not been fully recovered when the season started. Late season improvements to his hitting brought his cumulative season numbers to near his career averages, but still well below the standards he had set in 2004. He finished the year with a .257 batting average, a .299 on-base percentage, and a .363 slugging percentage, compared to his career highs of .308, .335, and .459 respectively the year before. His defense, however, did not seem to suffer. For the second straight year he led all shortstops in the National League (and, in fact, all of baseball) in assists (523), total chances (783), and double plays (126). Largely because of Wilson and fellow defensive standout second baseman José Castillo, the Pirates turned more double plays in 2005 than any National League team save the Cardinals. 2006–2009 Wilson rebounded offensively yet never to the same level as in 2004. Most notably, in 2007, he hit .296 with a career high 12 home runs despite only playing in 135 games. He had frequently been the subject of trade rumors. Seattle Mariners 2009 season On July 29, 2009, Wilson was traded to the Seattle Mariners along with Ian Snell for Ronny Cedeño and Minor League players Jeff Clement, Aaron Pribanic, Brett Lorin, and Nate Adcock. Wilson was reportedly shocked to find out he had been traded to Seattle saying, He won a Fielding Bible Award for his defensive excellence at shortstop during the season. In November 2009, Jack Wilson re-signed with the Seattle Mariners for 2-years, $10 million. Atlanta Braves 2011 season On August 31, 2011, Wilson was traded to the Atlanta Braves for a player to be named later. On January 13, 2012, the Braves announced they re-signed him to a 1-year 1M plus 500K bonuses for games played. On August 31, 2012, the Braves released Wilson. Retirement Wilson announced his retirement on September 25, 2012. Coaching career Wilson was the head coach at his alma mater, Thousand Oaks High School, from 2017 to 2021 where he went 98-30-1. He has held several positions coaching national amateur talent with