England's Moeen Ali celebrates his half century on the third day of the fourth Test match between England and South Africa at Old Trafford cricket ground in Manchester on August 6, 2017. / AFP PHOTO / Lindsey Parnaby / RESTRICTED TO EDITORIAL USE. NO ASSOCIATION WITH DIRECT COMPETITOR OF SPONSOR, PARTNER, OR SUPPLIER OF THE ECB        (Photo credit should read LINDSEY PARNABY/AFP/Getty Images)