Toshack's performance in the First Test at Trent Bridge was a quiet one, taking a wicket in each innings. He was involved in an aggressive final wicket partnership of 32 with Johnston, scoring 19 runs, his best at Test level to date in just 18 minutes. Toshack's best Test performance was his 5/40 in the second innings of the Second Test at Lord's when Miller was unable to bowl after being injured, including the wickets of Cyril Washbrook, Bill Edrich, captain Yardley and Alec Coxon. During this performance, he employed two short legs and a silly mid-off. He had a moderately successful Third Test, taking figures of 3/101 in the only Test that Australia did not win. His knee injury flared again in the Fourth Test after taking an ineffective 1/112 in the first innings, he was unable to bowl in the second innings of an Australian win. He made a recovery and it was hoped that he would be able to play in the Fifth Test, but he injured again himself in the lead-up match against Lancashire. He was taken to London for cartilage surgery, ending his tour and his Test career. An inept batsman with an average of 5.78 in first-class fixtures, Toshack managed a Test average of 51 on the 1948 tour after being out only once, behind only Arthur Morris, Sid Barnes, Bradman and Neil Harvey. The unbeaten 20 he managed in the Lord's Test was his best first-class score, made in an uninhibited tenth-wicket stand with Johnston. Due to the fragility of his knee, Toshack was used sparingly in the tour games, playing in only 11 of the 29 non-Test matches on the tour. Toshack totalled 50 wickets at the average of 21.12 for the tour.