Petra Kvitova defeated Tereza Smitkova 7-5 6-4 in the Shenzhen $25K quarter-final on hard.
Kvitova P. took it in straight sets.
Kvitova P. and Smitkova T. faced 4 of the same opponents in the last 12 months. Kvitova P. went 9–0 (100%) against them, Smitkova T. 2–2 (50%). Kvitova P. came out better against 2 of 3 comparable opponents, Smitkova T. against 0.
Only 4 common opponents — small sample, treat as indicative.
Petra Kvitova beat Tereza Smitkova 7-5 6-4. Umpiry, "Petra Kvitova vs Tereza Smitkova — Shenzhen $25K Quarter-final", https://umpiry.com/match/2015-01-08/kvitova-vs-smitkova-shenzhen-25k-qf?utm_source=cite (as of 8 January 2015).