HONOLULU (AP) — Brooks Koepka hasn’t been the same since he tied for third in the FedEx Cup final in August, and hasn’t felt entirely healthy since last March. He wouldn’t rate himself full strength now. Koepka returns to competition this week in the Abu Dhabi HSBC Championship, his first tournament since he reinjured his left knee in South Korea at the CJ Cup. He said Tuesday his left knee …