[1] He was a tail-end left-handed batsman and a left-arm fast-medium in-swing bowler who played first-class cricket for Leicestershire from 1937 to 1952.
[3] In 1938, with the decline and imminent retirement of George Geary, who had been the mainstay of the bowling attack since before the First World War, Leicestershire gave Sperry an extended trial in the second half of the season and he responded with 27 wickets.
[4] The 1939 season was a very poor one for Leicestershire, who finished at the bottom of the County Championship, but Wisden Cricketers' Almanack noted "notable advancement" by Sperry who, it said, often endured long spells of work".
[5] The Leicestershire club that Sperry returned to in 1946 after the Second World War was a rather different side from that of 1939: other seam bowlers such as William Flamson and Haydon Smith were either dead or retired, and the attack centred on the spin bowling of Jack Walsh and Vic Jackson.
[8] In his obituary in the 1998 edition of Wisden the Leicestershire cricket historian Philip Snow was quoted: "(Sperry) appeared frail, but would bowl loyally until the point of fatigue.