Steve Ontiveros was a professional baseball player who played as a pitcher for various teams during his career. He was born on March 5, 1961, in Tularosa, New Mexico, and attended the University of Michigan, where he played college baseball.

Ontiveros was drafted by the Oakland Athletics in the second round of the 1982 Major League Baseball draft. He made his major league debut with the Athletics in 1985 and played for the team until 1993. During his time with the Athletics, Ontiveros was known for his consistency and durability as a starting pitcher. He had a career record of 74-69 with a 4.06 ERA and 1,012 strikeouts.

In 1994, Ontiveros signed with the Philadelphia Phillies as a free agent. He played for the Phillies for two seasons before being traded to the Seattle Mariners in 1996. He played for the Mariners for one season before being traded to the Boston Red Sox in 1997. He played for the Red Sox for two seasons before being released in 1999.

Ontiveros signed with the Chicago Cubs in 2000 but was released before the start of the season. He then signed with the Anaheim Angels but was released again before the start of the season. He retired from baseball in 2000.

Throughout his career, Ontiveros was known for his control and ability to keep the ball in the park. He had a career WHIP of 1.31 and allowed an average of 0.8 home runs per nine innings pitched. He was also known for his ability to pitch deep into games, as he had 53 complete games and 10 shutouts in his career.

Ontiveros was a two-time All-Star, earning the honor in 1994 and 1995. He also finished in the top 10 in Cy Young Award voting twice, finishing seventh in 1994 and eighth in 1995.

After retiring from baseball, Ontiveros worked as a pitching coach for various minor league teams. He also worked as a scout for the Los Angeles Dodgers and as a special assistant to the general manager for the Arizona Diamondbacks.

In conclusion, Steve Ontiveros was a consistent and durable starting pitcher who played for various teams during his career. He was known for his control, ability to keep the ball in the park, and ability to pitch deep into games. He was a two-time All-Star and finished in the top 10 in Cy Young Award voting twice. After retiring from baseball, he worked as a pitching coach and scout for various teams.