Peter made three appearances in Liverpool's forward-line during the 1920-21 First Division season. His debut was against Sheffield United early in October 1920 and he scored Liverpool's first goal in a 2-2 Anfield draw. But he had to wait until the following April before being selected again. His third and final game was in the last match of the season, a convincing 3-0 home win over Arsenal. McKinney later emigrated to the United States and couple of years after leaving Liverpool, he joined the New York Giants.
Other Clubs: Consett FC (amateur), New York Giants