MADRID–Three-time champion Novak Djokovic may have played at the Madrid Open for the last time after crashing out in the second round to Italian Matteo Arnaldi on Saturday, with the Serbian admitting he did not know if he would return.

Novak Djokovic has lost to Matteo Arnaldi in the opening round of the Madrid Open. That extends the 24-time Grand Slam winner's struggles on clay ahead of Roland Garros.

On Saturday, the 4-seed Djokovic took on unseeded Matteo Arnaldi in their first-ever meeting. Arnaldi defeated Djokovic in straight sets during their second-round match at the Madrid Open: 6-3, 6-4.