Under Davenport's tutelage, the 21-year-old American made her first major semifinal in 2015, beating Petra Kvitova and Venus Williams to make the Australian Open semifinals. Their partnership ended after that season due to scheduling problems, but Keys confirmed on Friday that Davenport will be her coach in 2017.
"I am very excited to be working with Lindsay again as she's helped me reach great results in the past and we make an excellent team," Keys wrote on Twitter.
Unfortunately the partnership won't debut on court for at least another month. Keys also announced she would be unable to compete at the Australian Open next month as she is still recovering from off-season arthoscopic wrist surgery. When entry lists were released earlier this month, Keys' name was notably absent from any Australian Open lead-up tournaments.
"While I've been training with Lindsay and at USTA in Orlando for a few weeks, I don't want to rush back and need to take my time to be fully able to perform at my best on court," Keys said.
Keys is coming off her most consistent season to date, finishing the season at No.8 after qualifying for her first BNP Paribas WTA Finals Singapore presented by SC Global in October. After the season she announced a surprise split with veteran coach Thomas Hogstedt due to personality conflicts.
With Davenport she has reunited with a close friend and mentor who has keen insight into Keys' familiar, powerful game.