But the Scot, 32, returned to the court after hip resurfacing surgery and beat fellow veteran Stan Wawrinka in the final of the European Open in October.
The Sussexes and baby Archie spent the recent Christmas holidays in Canada with Meghan's mother, Doria Ragland.
At the same time, Harry launched an emotional attack on the UK tabloid press for what he called a "ruthless campaign" against his wife.
Teenager Bianca Andreescu of Canada soared even more dramatically, from 178th to fifth in the world, beating Serena Williams in the final of the US Open to become the first Canadian to win a Grand Slam singles title.
Having been the youngest player to come through Wimbledon qualifying, 15-year-old Coco Gauff stunned five-time champion Venus Williams in the first round in straight sets, belying her ranking of 313.
Tottenham Hotspur, beaten 2-0 by Liverpool in last season's final in Spain, will lock horns with Bundesliga leaders RB Leipzig, who are through to the knockout stage for the first time. Spurs can count on the experience of new coach Jose Mourinho - a two-time winner of the competition, with Porto in 2004 and Inter Milan in 2010.
"One of my goals for next year would be a Grand Slam title, finishing in the top-three by the end of the year, making the Nitto Finals again and winning a Masters 1000."
Irish said SACA wanted to find solutions, "both to the financial challenges which cricket now faces and to what the domestic structure should be and we have no problem in sitting down with the likes of David Richardson and Graeme Smith to find these. However this time around the process needs to be done properly."
His move brings an end to his five-year spell with Salzburg, whom he joined from Cerezo Osaka in January 2015.