 His Army teammates included a number of later Negro league stars , such as Dobie Moore , Heavy Johnson , Bob Fagan , Lemuel Hawkins , and William " Big C " Johnson . Over the next three seasons , the Wreckers won the Post League championship , the United States Army Series , and the Oahu League . In February 1917 Rogan twice defeated the Portland Beavers of the Pacific Coast League , who were visiting the islands for spring training . On furlough for several months in 1917 , Rogan played professionally for the Los Angeles White Sox , the Kansas City , Kansas , Giants , and J. L. Wilkinson 's All Nations Club , but returned to the army for three more years . 
