Andreas Seppi defeated Stefanos Tsitsipas 4-6 6-4 6-4 in the Sydney quarter-final on hard.
Seppi A. came through in three sets.
Seppi A. and Tsitsipas S. faced 9 of the same opponents in the last 12 months. Seppi A. went 2–8 (20%) against them, Tsitsipas S. 6–5 (55%). Tsitsipas S. came out better against 4 of 9 comparable opponents, Seppi A. against 0 — though 1 of those edges carries caveats (retirement).
Andreas Seppi beat Stefanos Tsitsipas 4-6 6-4 6-4. Umpiry, "Andreas Seppi vs Stefanos Tsitsipas — Sydney Quarter-final", https://umpiry.com/match/2019-01-07/seppi-vs-tsitsipas-sydney-qf?utm_source=cite (as of 7 January 2019).