Philadelphia Phillies Wolf made his
major-league debut on June 11, 1999, against the
Toronto Blue Jays, pitching 5 innings, giving up one
run, and recording his first career
victory in the Phillies 8–4 win over Toronto. He finished his first season with a 6–9 record and a 5.55 ERA. In his second season, Wolf was embedded in the rotation and was a mainstay the entire season, going 11–9 in 32 starts. He followed the next couple of seasons winning 10 and 11 games respectively in the years 2001 and 2002. In 2003, Wolf was selected to the
National League All-Star team and finished the year with a career-high 16 wins. On August 11, 2004, Wolf hit two
home runs while pitching the Phillies to a 15–4 win against the
Colorado Rockies. On July 1, 2005, Wolf underwent
Tommy John surgery, missing the remainder of the season and the first half of the 2006 season. He made his return to the Phillies' rotation on July 30, 2006. He finished the 2006 season with a 4–0 record, pitching only 55 innings. During his time with the Phillies, Wolf was supported at every home start by a fan group, “The Wolf Pack,” founded by eight Wood brothers and their four cousins. Their "pack leader" Patrick Wood was the spokes person for the group. The group, sporting wolf masks, assembled in the typically empty upper deck of Veterans Stadium and celebrated Wolf strikeouts by howling and dancing. Wolf befriended members of the group and kept in contact even after leaving the Phillies in 2006. The Wolf Pack returned to
Citizens Bank Park in 2016 for Wolf's retirement ceremony and performed a dance on top of the Phillies dugout with the Phillie Phanatic. After the 2006 season Wolf's contract with the Phillies expired and he became a
free agent.
Los Angeles Dodgers Wolf signed as a free agent with the Los Angeles Dodgers. Wolf started 18 games, going 9–6. On July 4, 2007, Wolf went on the 15-day
disabled list due to left shoulder soreness. He underwent shoulder surgery and missed the rest of the season. On November 1, the Dodgers bought out his 2008 option and allowed Wolf to become a free agent.
San Diego Padres On December 1, 2007, Wolf signed a one-year contract with the
San Diego Padres. On April 15, 2008, Wolf had a
no-hitter through 6 innings against the
Colorado Rockies at
Petco Park before
Brad Hawpe hit a
single.
Houston Astros On July 22, 2008, Wolf was traded to the Houston Astros for
Chad Reineke.
Second stint with the Los Angeles Dodgers On February 6, 2009, Wolf signed a one-year, $5 million contract to return to the Dodgers. He turned in one of his best seasons, finishing 11–7 with a 3.23 ERA in 34 starts for the team.
Milwaukee Brewers On December 14, 2009, Wolf agreed to a three-year, $29.75 million contract with the Milwaukee Brewers. In 2010, Wolf finished 13–12 in 34 starts. In 2011, he started 33 games (4th in the National League) and was 13–10, with a 3.69 ERA. Through 2011, his 9 career shutouts were 6th-most of all active pitchers. A few weeks before being released, Wolf threw a 49 mph curveball, the slowest in MLB history.
Baltimore Orioles On August 31, 2012, Wolf signed with the
Baltimore Orioles and was subsequently added to the team's 25-man roster as a member of the
bullpen. Wolf was also included on the Orioles postseason roster until losing the
2012 ALDS against the Yankees. Wolf went 2–0 in 5 games for the O's. He became a free agent following the season on November 3..
2013 On October 30, Wolf underwent
Tommy John surgery for the second time of his career. As a result, Wolf missed the entire 2013 season.
Seattle Mariners On February 13, 2014, Wolf signed a minor league contract with the
Seattle Mariners. The Mariners' released him on March 25.
Arizona Diamondbacks On April 11, 2014, he signed a minor league contract with the
Arizona Diamondbacks. Wolf opted out of his contract on May 14, 2014.
Miami Marlins On May 14, 2014, Wolf agreed to a one-year contract with the
Miami Marlins. Wolf pitched in 6 games for the Marlins, posting a 1–3 record with a 5.26 ERA. On June 16, the Marlins designated Wolf for assignment after a couple of poor starts. Two days later on June 18, Wolf cleared outright waviers and elected free agency.
Second stint with the Baltimore Orioles On June 22, 2014, Wolf agreed to a minor league contract to return to the Orioles. After 6 games (1 start) with the Triple-A
Norfolk Tides, he opted out of his minor league deal on July 13.
Los Angeles Angels of Anaheim On July 26, 2014, Wolf signed a minor league deal with the
Los Angeles Angels of Anaheim. He made 7 starts for the Triple-A
Salt Lake Bees. He became a free agent following the season on November 3.
Toronto Blue Jays On March 16, 2015, Wolf signed a minor-league contract with the
Toronto Blue Jays. The Blue Jays announced the signing officially on March 18, and assigned him to the Triple-A
Buffalo Bisons. Wolf made 23 starts for the Bisons in 2015, and posted a 9–2 record, with a 2.58 ERA, 106 strikeouts and 40 walks in 139 innings.
Detroit Tigers On August 20, 2015, Wolf was traded to the
Detroit Tigers for cash considerations. He had his contract selected on August 22, he made his debut for the Tigers the same day in a game against the
Texas Rangers. In his debut, he pitched seven innings, allowing four runs, three earned, on nine hits, with five strikeouts and no walks. Eight of Texas' first 14 batters singled against him, before retiring 14 of the final 15 batters he faced. Wolf appeared in a total of 8 games with the Tigers, pitching to an 0–5 record with a 6.23 ERA. Wolf retired during the offseason, following a 16-year career. ==Scouting report==