The Scot defeated the world No 1 5-4 in the second round of the Regal Welsh Open at Newport, having put Hendry out of the Grand Prix at the corresponding stage in October.
Hendry, the six-times world champion, again took the defeat hard and was clearly stunned as the post-match news conference got under way. A number of questions were fired at him but he failed to respond to any of them.
Burnett won the opening two frames but when Hendry bounced back with runs of 67, 100, 40 and 85 to establish a 4-2 advantage the possibility of a shock seemed to have disappeared, but Burnett is confident after reaching the quarter-finals of last month's German Open, his personal best in six years on the professional circuit. He comfortably accounted for the next two frames before ensuring a major surprise by stealing a scrappy deciding frame on the blue.
Defeat leaves Hendry, who won the Regal Welsh title last year, still searching for his first trophy of the season. Out-of-form Hendry has not won a title since the Benson and Hedges Irish Masters in March.
He was not the only household name to go out. Ken Doherty, who became world champion by beating Hendry in the final last season, also suffered a shock defeat when, after leading 3-1, he was beaten 5-3 by Swansea's Tony Chappel.Reuse content