<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?amesema mechezo unaochukua muda mwingi na ratiba iliyojaa michezo mingi ni sababu iliyosababisha majeraha makubwa kwa nyota za mchezo huo andy murray, rafael nadal, djokovic na stan warinka katika kipindi cha miezi 12 iliyopita.  <response>: longer matches and a packed schedule have been cited as a possible cause of the rise in serious injuries among some of the games stars with andy murray, rafael nadal, novak djokovic and stan wawrinka all suffering serious injuries in the past 12 months. 