Career
An off-spinner who opened the bowling, on his first-class debut for Canterbury against Auckland in January 1894 Robertson took 8 for 59 then, bowling unchanged throughout the second innings, 6 for 48. In his next match he took 6 for 72 (unchanged again) and 2 for 72. Selected for New Zealand"s first representative match in February 1894, he was New Zealand"s outstanding player, taking 6 for 76 and 4 for 73 in a 160-run loss to New South Wales.
He then took seven wickets against Otago and eight against Hawke"s Bay to give him 47 wickets in five matches at an average of 12.12.
He was New Zealand"s leading wicket-taker for the season. After taking only one wicket in the first match in 1894-1895, he then took 4 for 65 and 9 for 98 against Wellington, 6 for 54 and 5 for 40 against Fiji, and four wickets against Otago, to finish with 29 wickets at 14.00.
He was New Zealand"s joint leading wicket-taker for the season. After a gap of five years he returned to the Canterbury side in 1900-1901 for his final two matches, and took six wickets.
Dick Brittenden said of Robertson: "He spun the ball either way a prodigious amount.
Small and slender, he suffered much ill-health, and asthma ended a brilliant career cruelly early." An accident in his youth had resulted in the loss of two fingers of his left hand.