Mike Holtz is a former professional baseball player who played as a pitcher in Major League Baseball (MLB) for over a decade. Holtz was born on October 10, 1972, in Arlington, Texas, and attended the University of Texas at Arlington.

Holtz began his professional baseball career in 1991 when he was drafted by the California Angels in the 21st round of the MLB draft. He spent several years in the minor leagues before making his MLB debut with the Angels in 1996. Holtz played for the Angels for four seasons, from 1996 to 1999, and was primarily used as a relief pitcher.

In 2000, Holtz was traded to the St. Louis Cardinals, where he played for one season before being traded again to the Texas Rangers. Holtz played for the Rangers for two seasons, from 2001 to 2002, before being traded to the Pittsburgh Pirates. He played for the Pirates for one season before being traded back to the Angels in 2004.

Holtz played his final two seasons in the MLB with the Los Angeles Dodgers, from 2005 to 2006. He retired from professional baseball in 2007.

Throughout his career, Holtz was known for his ability to pitch effectively against left-handed batters. He had a career record of 22 wins and 24 losses, with an earned run average (ERA) of 4.18. Holtz appeared in a total of 468 games, pitching 481 innings and striking out 365 batters.

Holtz was also known for his charitable work off the field. He was involved with several organizations, including the Make-A-Wish Foundation and the Angels Baseball Foundation, which supports youth baseball programs in Southern California.

Overall, Mike Holtz had a successful career as a professional baseball player, playing for several teams over the course of a decade. He was known for his ability to pitch effectively against left-handed batters and for his charitable work off the field.