Complex sentence: The next year, according to some sources, he beat Budge again by the same narrow margin; other sources say that he played Budge infrequently and that his primary tour was against Frank Kovacs, whom he beat 11 matches to 10.
Split into simpler sentences: The next year, according to some sources, he beat Budge again by the same narrow margin. But other sources say that he played Budge infrequently and that his primary tour was against Frank Kovacs, whom he beat 11 matches to 10.