Roger Federer made his Indian Wells departure official, while whetting the tennis world's appetite for his return.
Watch: Wawrinka Into Dubai Final as Kyrgios Retires
Continuing his recovery from knee surgery, Federer officially withdrew from Indian Wells as expected.
Federer, who underwent successful arthroscopic surgery to repair a torn meniscus, was runner-up to Novak Djokovic in the 2015 Indian Wells final.
In encouraging news, the 17-time Grand Slam champion tweeted this video of his classic serve and a rare shot of him on court without his trademark headband.
The next tournament listed on Federer's official schedule is Roland Garros, starting on May 23rd, however it is quite possible he could return before then if his rehab continues to progress.
Federer is a four-time Indian Wells champion. The tournament posted this video of his 2012 victory over John Isner.
Photo credit: @BNPParibasOpen