Complex sentence: In October 1981 he finished in tenth place for "Centipede" at the Atari, Inc. world championships, and in April 1982 became the United States "Pac-Man" champion at a "People"-sponsored tournament, with a score of 1,200,000.
Split into simpler sentences: In October 1981 he finished in tenth place for "Centipede" at the Atari, Inc. world championships. In April 1982, he became the United States "Pac-Man" champion at a "People"-sponsored tournament, with a score of 1,200,000.