No. 497 Zhang Fires Tweener Pass At Chengdu Challenger Aug 01, 2017 Watch as Zhizhen Zhang, a 20-year-old Shanghai native, fires the Hot Shot of the week at the ATP Challenger Tour event in Chengdu. Tags: 2017 Challenger Hot Shot Zhizhen Zhang Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus