Ken Dayley, a left-handed pitcher, made his presence felt in Major League Baseball during the 1980s and early 1990s. Born on February 25, 1959, in Jerome, Idaho, Dayley attended the University of Portland, where he honed his skills on the mound. His talent caught the attention of the Atlanta Braves, who selected him in the first round of the 1980 MLB Draft.

Dayley debuted with the Braves in 1982, showcasing his potential as a pitcher. Over the next few seasons, he worked to establish himself in the Braves' bullpen. However, it was his trade to the St. Louis Cardinals in 1984 that marked a turning point in his career. With the Cardinals, Dayley found a more defined role and began to thrive as a relief pitcher.

During his tenure with the Cardinals, Dayley became known for his effectiveness in high-pressure situations. His performance in the postseason was particularly noteworthy. In the 1985 National League Championship Series (NLCS) against the Los Angeles Dodgers, Dayley played a crucial role, helping the Cardinals secure a spot in the World Series. Although the Cardinals ultimately fell to the Kansas City Royals in the World Series, Dayley's efforts did not go unnoticed.

The following year, Dayley continued to be a reliable option out of the bullpen. In the 1987 season, he helped the Cardinals reach the World Series once again. This time, they faced off against the Minnesota Twins. Despite the Cardinals' loss in a hard-fought seven-game series, Dayley's contributions were vital to the team's success throughout the playoffs.

After his time with the Cardinals, Dayley signed with the Toronto Blue Jays in 1991. However, injuries began to take a toll on his performance. He spent two seasons with the Blue Jays before moving to the San Francisco Giants in 1993. Unfortunately, his stint with the Giants was short-lived, as injuries continued to hamper his ability to play at the highest level.

Dayley's career in Major League Baseball came to an end after the 1993 season. Over the course of his career, he appeared in 356 games, recording a win-loss record of 33-45, an earned run average (ERA) of 3.64, and 406 strikeouts. While his career may not have been filled with accolades or awards, Dayley was a dependable pitcher who played an important role for the teams he was part of, particularly during his years with the St. Louis Cardinals.