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Adelaide International 1: Red-hot Korda takes out Sinner to reach semi-finals
Sebastian Korda defeated Jannik Sinner 7-5, 6-1 on Friday
Korda, ranked No 33, will play Japanese Yoshihito Nishioka next.
The 22-year-old American added Sinner to a list of victims that began with former world No 1 Andy Murray (7-6 (3), 6-3) in round one, followed by Spaniard Roberto Bautista Agut (6-4, 6-4).
Sinner, ranked No 15, had reached the last eight without dropping a set, beating Kyle Edmund (6-3, 6-2) and Australian wildcard Thanasi Kokkinakis (7-6 (2), 6-4).
Adelaide ATP 250, other last-eight results (Memorial Drive Tennis Centre, hard, USD 642.735, most recent results first):