Greece's Stefanos Tsitsipas is heading to the round of 16 at the Miami Open.
He reached the fourth round of the ATP Masters 1000 event with a 6-3, 3-6, 6-1 win over Japanese Kei Nishikori on Monday.
Stefanos had 12 aces and won 89% of his first-serve points.
He will now face Italian Lorenzo Sonego.
