David Wells is a former Major League Baseball pitcher who played for several teams during his career. He was known for his left-handed pitching style and his ability to throw a variety of pitches, including a fastball, curveball, and changeup.

Wells began his career in 1987 with the Toronto Blue Jays, where he played for three seasons before being traded to the Detroit Tigers. He spent two seasons with the Tigers before being traded again, this time to the Cincinnati Reds. Wells played for the Reds for one season before being traded once more, this time to the Baltimore Orioles.

In 1996, Wells signed with the New York Yankees, where he had some of the most successful years of his career. He helped lead the team to a World Series championship in 1998 and was named the Most Valuable Player of the American League Championship Series that same year. Wells played for the Yankees until 1999, when he was traded to the Toronto Blue Jays.

After a brief stint with the Blue Jays, Wells signed with the Chicago White Sox in 2001. He played for the White Sox for one season before being traded to the New York Yankees once again. Wells played for the Yankees for two more seasons before being traded to the San Diego Padres in 2004.

Wells played for the Padres for one season before being traded to the Boston Red Sox in 2005. He helped lead the team to a World Series championship that year, pitching a perfect game against the Minnesota Twins earlier in the season. Wells played for the Red Sox for one more season before being traded to the Los Angeles Dodgers in 2007.

Overall, Wells had a successful career in Major League Baseball, winning two World Series championships and earning three All-Star selections. He retired from baseball in 2008 with a career record of 239 wins and 157 losses.