A shoulder injury, illness and a bruised knee made for a "tricky" pre-season for Andy Murray, who accepts it could prove to be the final one of his career.
By his own admission, the 36-year-old did not enjoy much of last season and won just two matches in his final five events of the year.
Murray's 20th season on the ATP Tour will begin on New Year's Day with a match against second seed Grigor Dimitrov at the Brisbane International.
"If I was in a situation like I was at the end of last year, then I probably wouldn't go again," Murray told BBC Sport.