• Canadian 19-year-old holds nerve to triumph 6-3, 7-5 • Williams loses her fourth grand-slam final in a rowSerena Williams, so strong of limb and spirit, could not disguise her inner frailty when she stumbled at the tape in the
US Open final, and tennis embraced another new teenage champion, Bianca Andreescu, who took an hour and 40 minutes to win 6-3, 7-5 on her grand slam final debut.
It was a match of uneven quality but festooned in unalloyed drama and much history. It also crowned the best first appearance in the tournament decider since Venus Williams lost to Martina Hingis in the 1997 final.