Australian tennis player Thanasi Kokkinakis was once in a very dark spot but refused to give up and now he is enjoying the best days of his career. Kokkinakis, 25, reached a career-high ranking of No. 69 in 2015 but instead of continuing his rise, the Australian ended up at home recovering from various injuries and surgeries. For the first time in many years, world No. 97 Kokkinakis was able to do a strong preseason and now he is healthy and back into the top-100 for the first time in six years. “I think it’s just not going to happen overnight.There are a lot of steps that need to be done and keeping the faith, keeping the hope a little bit [is important],” Kokkinakis told the ATP website. “It can seem very, very far away, but a lot of the time if you put some good days together, …