It was also in 1914 that Lefty tried out for the Mobil Gulls of the Southern Association. In two appearances, Claude was 0-2 as he pitched 8 innings, gave up 7 hits, 7 walks, 5 runs and struck out 2.
The following season Lefty played for the Salt Lake City Bees of the Pacific Coast League. Lefty was leading the league with 33 wins, 294 strikeouts and 419 innings pitched when he was purchased by the Chicago White Sox in mid-August.
Lefty's stint with the White Sox would be briefly interrupted during the 1918 season when he was called into military service. With a record of 6-4 in mid-June, Lefty went to work in the shipyards and missed the remainder of the 1918 baseball season.
Sixty-five days after being found not guilty in the Black Sox trial, Lefty purchased a pool hall and cigar store from his former roommate, Joe Jackson. The property, which was sold on October 6, 1921, was located at 1202 E. 55th Street in Chicago and cost Lefty the sum of one dollar.
Lefty played Semi-pro ball throughout the country in the 1920's. His stops included Minnesota, Arizona and New Mexico. Sadly, Lefty began drinking heavily during this period. On a number of occasions, his teammates were forced to track him down by canvassing the nearby bars. It was also reported that when Lefty did pitch, he would drink in between innings and by late in the game, he was one of the most intimidating pitchers around.
In 1937 Lefty moved to California and operated a nursery business until his death on November 4,1959.