The Fourth Test of the 1948 Ashes series was one of five Tests in a cricket series between Australia and England. The match was played at Headingley Cricket Ground at Leeds from 22 to 27 July with a rest day on 25 July. Australia won the match by seven wickets to take an unassailable 3–0 series lead. In successfully chasing a target of 404, they set a new world record for the highest victorious runchase in Test history, a record lasting until 1976.

Samuel John Everett Loxton was an Australian cricketer, footballer and politician. Among these three pursuits, his greatest achievements were attained on the cricket field; he played in 12 Tests for Australia from 1948 to 1951. A right-handed all-rounder, Loxton was part of Don Bradman's Invincibles, who went through the 1948 tour of England undefeated, an unprecedented achievement that has never been matched. As well as being a hard-hitting middle-order batsman, Loxton was a right-arm fast-medium swing bowler who liked to aim at the upper bodies of the opposition, and an outfielder with an accurate and powerful throw. After being dropped from the national team, Loxton represented Victoria for seven more seasons before retiring from first-class cricket. He served as an administrator after his playing days were over and spent 24 years as a Liberal Party member of the Victorian Legislative Assembly. Up until 1946, Loxton also played in the Victorian Football League (VFL) for St Kilda as a forward. In all three arenas, he was known for his energetic approach.