ANOTHER big day of proceedings were had at both the WTA 500 event in Stuttgart, Germany and the WTA 250 event in Istanbul, Turkey, as majority of the seeds across both competitions reigned supreme.
Six matches played out in Stuttgart on Day 2 of proceedings at the Porsche Tennis Grand Prix, seeing a couple of seeds get their clay season started successfully as four German talents took the court on home soil. Both seeds reigned supreme in straight sets, with Aryna Sabalenka taking out the quickest result of the day 6-2 6-2 over China’s Zhang Shuai in just 66 minutes. Seventh seed Petra Kvitova encountered a tougher opponent in Jennifer Brady but still claimed a clean 6-4 6-3 win in just over 90 minutes to head to the second round.
Two of the four German competitors reigned supreme, with Laura Siegemund collecting the win over her compatriot in Mona Barthel, 6-4 3-6 6-1, whilst Anna-Lena Friedsam downed Norwegian Ulrikke Eikeri 6-2 6-0 in one hour and 24 minutes. Julia Middendorf was not quite so lucky though, falling to Estonian Anett Kontaveit, while the remaining Round of 16 spot went to Ekaterina Alexandrova, claiming a come-from-behind victory over Karolina Muchova, 4-6 6-2 6-3.
PORSCHE TENNIS GRAND PRIX ROUND OF 32 RESULTS:
 Aryna Sabalenka (BLR) defeated Zhang Shuai (CHN) 6-2 6-2
 Petra Kvitova (CZE) defeated Jennifer Brady (USA) 6-4 6-3
Anett Kontaveit (EST) defeated Julia Middendorf (GER) 6-2 6-3
Ekaterina Alexandrova (RUS) defeated Karolina Muchova (CZE) 4-6 6-2 6-3
Laura Siegemund (GER) defeated Mona Barthel (GER) 6-4 3-6 6-1
Anna-Lena Friedsam (GER) defeated Ulrikke Eikeri (NOR) 6-2 6-0
At Istanbul, Anastasia Potapova bounced back well from a delayed third set against sixth seed compatriot Anastasia Pavlyuchenkova yesterday, registering a third set win and only requiring an additional 20 minutes to take out the match 7-6 6-7 6-4. Continuing onto Day 2’s proceedings at the event, and it was a fairly predictable day of action with four of the top five seeds earning wins. Elise Mertens and Daria Kasatkina took out the cleanest wins of the day with the top seed Belgian defeating Spaniard Lara Arruabarrena 6-2 6-0 whilst Kasatkina snagged the quickest result of the day with a 6-1 6-0 sweep of Tereza Mrdeza in just 65 minutes.
Third seed Veronika Kudermetova and fifth seed Barbora Krejcikova both also reigned supreme but were forced to overcome deficits, with the former slipping in the second set to give American Bernarda Pera a look in before claiming the three hour victory 6-4 4-6 7-6. Krejcikova overcame a tight 6(8)-7 first set to claim victory over hometown hopeful Cagla Buyukakcay, easily accounting for her in the remainder of the 6-7 6-2 6-0 encounter. Meanwhile, second seed Petra Martic was disposed of by Frenchwoman Fiona Ferro, slipping in the 7-5 6-2 encounter and failing to take back momentum.
Of the five remaining matches for the day, all were resolved in straight sets with the closest of the bunch between Romanian Sorana Cirstea and Ukrainian Kateryna Kozlova, resulting in a 6-4 7-6 victory the way of the Romanian in just under two hours. On the other end of the spectrum was a one hour and nine minute victory to Marta Kostyuk, who downed Russian Kamilla Rakhimova 6-4 6-3 in an impressively speedy encounter. Ana Bogdan, Vera Zvonareva and Kristina Mladenovic also joined the winners list to head to the Round of 16.
TEB BNP PARIBAS TENNIS CHAMPIONSHIP ISTANBUL ROUND OF 32 RESULTS:
 Elise Mertens (BEL) defeated Lara Arruabarrena (ESP) 6-2 6-0
Fiona Ferro (FRA) defeated  Petra Martic (CRO) 7-5 6-2
 Veronika Kudermetova (RUS) defeated Bernarda Pera (USA) 6-4 3-6 7-6
 Daria Kasatkina (RUS) defeated Tereza Mrdeza (CRO) 6-1 6-0
 Barbora Krejcikova (CZE) defeated Cagla Buyukakcay (TUR) 6-7 6-2 6-0
Vera Zvonareva (RUS) defeated Polona Hercog (SLO) 6-3 6-3
Ana Bogdan (ROM) defeated Nao Hibino (JPN) 6-3 6-3
Marta Kostyuk (UKR) defeated Kamilla Rakhimova (RUS) 6-4 6-3
Kristina Mladenovic (FRA) defeated Barbara Haas (AUT) 6-4 6-3
Sorana Cirstea (ROM) defeated Kateryna Kozlova (UKR) 6-4 7-6
Anastasia Potapova (RUS) defeated  Anastasia Pavlyuchenkova (RUS) 7-6 6-7 6-4