Now ranked 36th in the world after playing just two Davis Cup matches since a second-round exit at the US Open in August, he said he is finally seeing progress through ongoing medical treatment.<\/p>\r\n\r\n
\u201cI'm most excited to see how my actual training responds about my back. My biggest concern was if I could finish a match,\u201d Tsisipas, who revealed the injury haunted him \u201cfor the last six or eight months,\u201d told the BBC.<\/p>\r\n\r\n
\u201cI would ask, 'Can I play another match without pain? I got really scared after the US Open loss [to Germany's Daniel Altmaier]. I could not walk for two days. That's when you reconsider the future of your career,\u201d he added.<\/p>\r\n\r\n
Tsitsipas said he was pleased with his current treatment plan after completing five weeks of pain-free off-season training. He is set to represent Greece in the United Cup, where they will face Naomi Osaka\u2019s Japan and Emma Raducanu\u2019s Great Britain in Perth and Sydney from 2 to 11 January, the week before the Australian Open.<\/p>\r\n\r\n
Eighteen national teams, each with up to three women\u2019s and three men\u2019s players, will compete in a group stage followed by a knockout round. Matches in Perth are scheduled at RAC Arena, while those in Sydney will be played at Ken Rosewall Arena.<\/p>\r\n\r\n
Tsitsipas said he was pleased with his current treatment plan after completing five weeks of pain-free off-season training. He is set to represent Greece in the United Cup, where they will face Naomi Osaka\u2019s Japan and Emma Raducanu\u2019s Great Britain in Perth and Sydney from 2 to 11 January, the week before the Australian Open.<\/p>\r\n\r\n
Perth will hold its two quarterfinal matches on January 7, with the winners advancing to Sydney for the semifinals and final. Teams moving from Perth will have a travel and rest day on January 8-9. The Sydney quarterfinals are set for January 8-9, followed by the semifinals on January 10 and the final on January 11.<\/p>\r\n\r\n