Dave Robertson, an outfielder in Major League Baseball, played primarily for the New York Giants and the Chicago Cubs. Born on September 25, 1889, in Portsmouth, Virginia, Robertson's professional baseball career began when he joined the New York Giants. His tenure with the Giants marked the start of a career that saw him become a reliable player in the league.

Robertson's time with the Giants was highlighted by his performance during the 1916 and 1917 seasons. In both years, he tied for the National League lead in home runs, hitting 12 each season. This achievement was particularly notable during an era when home runs were less common than in modern baseball. His ability to hit for power made him a valuable asset to the Giants' lineup.

In addition to his power-hitting capabilities, Robertson was known for his solid batting average. During the 1917 season, he posted a .307 average, contributing significantly to the Giants' offensive efforts. His performance helped the team reach the World Series in 1917, although they ultimately fell to the Chicago White Sox.

Robertson's career was interrupted by World War I, as he served in the United States Navy. This service caused him to miss the entire 1918 season. Upon returning to baseball in 1919, he continued to play for the Giants before being traded to the Chicago Cubs in 1920.

With the Cubs, Robertson continued to demonstrate his skills as an outfielder and hitter. Although his power numbers declined compared to his peak years with the Giants, he remained a competent player. His time with the Cubs, however, was relatively short-lived, as he was traded to the Pittsburgh Pirates in 1921.

Robertson's stint with the Pirates was brief, and he found himself back with the Giants later that same year. His second tenure with the Giants did not reach the heights of his earlier years, and he eventually retired from Major League Baseball after the 1922 season.

Throughout his career, Robertson was known for his left-handed batting and throwing abilities. He played in an era when the game was evolving, and his contributions to his teams were appreciated by fans and teammates alike. Despite not being inducted into the Baseball Hall of Fame, Robertson's achievements, particularly his home run titles, remain a part of baseball history.