Last year Watson became Britain's first WTA Tour event winner since 1988 after claiming the Osaka title, but her fall from grace has been as rapid as her ascent.
Monday's 6-0 5-7 6-2 defeat to Yanina Wickmayer in the first round at Luxembourg is symptomatic of her decline as the energetic baseline struggles to find the form and fitness that saw her move to the brink of earning seeded spots at Grand Slam tournaments.
Watson, 21, has been in trouble since suffering from glandular fever earlier this season, going out in the first round of most events she has contested.
She had started 2013 at a career-high of world number 39, but illness struck - ruling her out for two months - and the Guernsey native has endured a terrible campaign, with her first-round loss in Japan last week proving extremely costly as she had won that tournament last season.
She has fallen from world number 92 to 133, with British number four and world number 167 Samantha Murray only 106 ranking points behind her.
Early defeat in Luxembourg is likely to see the Briton slip further.
Meanwhile Konta, who has done well on the women's second tier this season, rises to 115 but is some way short of British number one Laura Robson, the world number 46.