Dan Johnson, a left-handed first baseman and designated hitter, made his Major League Baseball debut with the Oakland Athletics in 2005. Born on August 10, 1979, in Coon Rapids, Minnesota, Johnson attended the University of Nebraska, where he honed his skills before being drafted by the Athletics in the seventh round of the 2001 MLB Draft.

Johnson's early years in the majors were marked by a promising start. In his rookie season with the Athletics, he played in 109 games, hitting .275 with 15 home runs and 58 RBIs. His performance earned him a spot on the Baseball America All-Rookie Team. Over the next few seasons, Johnson continued to play for Oakland, though his batting average fluctuated, and he faced challenges in maintaining a consistent presence in the lineup.

In 2008, Johnson's career took a turn when he was claimed off waivers by the Tampa Bay Rays. It was with the Rays that he experienced one of the most memorable moments of his career. On September 9, 2008, Johnson hit a game-tying home run in the ninth inning against the Boston Red Sox, a pivotal moment that helped the Rays secure a playoff spot and eventually reach the World Series. This clutch performance earned him the nickname "The Great Pumpkin," as it occurred during a critical September game.

Johnson's time with the Rays was characterized by sporadic appearances, as he moved between the majors and minors. Despite this, he continued to deliver in high-pressure situations. In 2011, he once again played a crucial role for the Rays, hitting a dramatic two-out, two-strike home run in the bottom of the ninth inning on the final day of the regular season. This home run tied the game against the New York Yankees, and the Rays went on to win in extra innings, clinching a playoff berth in one of the most thrilling finishes in MLB history.

After his stint with the Rays, Johnson's career included brief periods with several other teams. In 2012, he signed with the Chicago White Sox, where he spent most of the season in the minors before being called up in September. He then joined the New York Yankees in 2013, though he did not make a significant impact at the major league level during his time there.

Johnson continued to pursue opportunities in professional baseball, signing minor league contracts with the Cincinnati Reds and Toronto Blue Jays. In 2014, he was called up by the Blue Jays and played in 15 games, primarily as a pinch hitter. The following year, he signed with the St. Louis Cardinals but was released before the start of the season. He later joined the Louisville Bats, the Triple-A affiliate of the Reds, and eventually returned to the Rays organization.

Throughout his career, Johnson was known for his ability to deliver in clutch situations, particularly during his time with the Rays. His knack for hitting crucial home runs in late-game scenarios left a lasting memory for fans, even if his overall career statistics did not reflect prolonged success at the major league level.