 Wilhelm was noted during this period for his <unk> of relief pitcher Wilbur Wood , who came to the 1967 White Sox in a trade . Wood sometimes threw a knuckleball upon his arrival in Chicago , but Wilhelm encouraged him to throw it full @-@ time . By 1968 , Wood won 13 games , saved 16 games and earned a 1 @.@ 87 ERA . He credited Wilhelm with helping him to master the knuckleball , as the White Sox coaches did not know much about how to throw it . Between 1968 and 1970 , Wood pitched in more games ( 241 ) than any other pitcher and more innings ( 400 1 ⁄ 3 ) than any other relief pitcher . 
