Five‑time champion Roger Federer is out of the US Tennis Open after Bulgaria's Grigor Dimitrov won a late‑night thriller to finally beat the Swiss great.
38 year old Federer had won all seven of their previous meetings but Dimitrov fought back for a memorable 3‑6 6‑4 3‑6 6‑4 6‑2 win in New York.
Federer needed treatment for a back injury in the latter stages, allowing unseeded Dimitrov to take the victory.
World number 78 Dimitrov's shock win ensured there will be at least one first‑time Grand Slam finalist next Monday.
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