[1] He made his debut for Derbyshire in a non-status match against the West Indies in the 1900 season.
His next first-class appearance was against the South African touring side in the 1907 season, which was followed by a match against Yorkshire which ended in an innings defeat.
Dearnaley was a right-handed batsman who played eight innings in four first-class matches with an average of 6.37 and a top score of 34.
[2] Dearnaley played football for Derby County F.C.
His record still stands for the highest number of runs scored in a match for Glossop Cricket Club, which he achieved in 1913.