He also has good sportsmanship, to his credit.

to his credit 是一个固定短语，其中 to 表示"归于、属于"，credit 在这里指"赞扬、荣誉"。 整个短语 to his credit 的意思是"值得赞扬的是"或"为他增光的是"，用来指出某人值得肯定的品质或成就。