Carlos Alcaraz on Wednesday doubled down on his criticism of the demands of the tennis calendar, saying "a lot of players" agree with him and "we have to do something about it".

“Probably they are going to kill us in some way,” Alcaraz said Saturday regarding the schedule after beating American Ben Shelton in straight sets at the Laver Cup in Berlin. “Right now a lot of good players are going to miss a lot of tournaments because of (injury).”

The four-time Grand Slam champion last week said at the Laver Cup that the schedule is "going to kill us", adding his voice to the growing number of players speaking out.