By Shrivathsa Sridhar

BENGALURU (Reuters) -World number nine Jack Draper said the ATP Tour must review its packed calendar if young players are to have long careers, after Holger Rune sustained a serious injury and joined a growing list of players breaking down as the season nears its end.

The relentless men’s and women’s tennis circuits, which run for 11 months, have come under a harsh spotlight in recent weeks with a string of high-profile players, including Draper, pulling out of tournaments and prematurely ending their seasons.

Several women’s players have also struggled with health and fitness concerns in the ongoing Asian swing of tournaments, with the likes of Naomi Osaka, Emma Raducanu, Daria Kasatkina, Elina Svitolina and Paula Badosa all affected.

Draper, who is nursing an ar

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