The 13-year-old boy was injured after falling from an upper level of Seattle's CenturyLink Field just before the Love Story singer's set.

Reports suggest he was stable and conscious when venue medics took him to Harborview Medical Center - but the boy had no recollection of what made him fall.

Meanwhile, during the show, Swift performed Trap Queen with rapper Fetty Wap and also surprised fans by introducing Seattle Seahawks quarterback Russell Wilson and his girlfriend Ciara onstage during the pop star's song Style.