Simona Halep avenged a Miami Open loss to British No.1 Johanna Konta en route to a World Group II Play-Off win over Great Britain. Check out more Fed Cup results here!
WTA Staff

The final day of April's Fed Cup weekend is underway, and Australia and Italy were among the first teams to clinch victories over Serbia and Chinese Taipei, respectively, keeping their spots in World Group II. Meanwhile, the Netherlands will remain in World Group I after their 2016 run to the semifinals, knocking out Slovakia, 3-2, in Bratislava.

Check out more highlights from Sunday's action after a topsy turvy opener.

Romania d. Great Britain, 3-2  - World Group II Play-Offs, Constanta, Romania

Simona Halep restored order after a chaotic opening day in her hometown, avenging a Miami Open loss to Johanna Konta, 6-1, 6-3. Halep's win put Romania on course for Irina-Camelia Begu to clinch the tie over Heather Watson, 6-4, 7-5, and remain in World Group II in 2018.

Halep was a mere points from victory over Konta in Crandon Park - the Brit went on to claim her maiden Premier Mandatory title two rounds later - and picked up where she left off yesterday at the Tenis Club IDU, hitting 17 winners and breaking serve five times to earn the win in one hour and 11 minutes.

"I expected on clay [for the match] to be like this," Halep said after the match. "I did everything: I stayed focused and I was very motivated after yesterday. I'm really motivated to win this tie. I feel we're dominating now."

Begu was similarly solid in the finals singles rubber, and though Great Britain nabbed an entertaining doubles win over Halep and Monica Niculescu, Romania edged through in the end.

At the close of the weekend in Constanta, the ITF announced it had provisionally suspended Ilie Nastase, who began the tie as Romania's captain following a series of controversial incidents over the tie's first two days.

The ITF's Internal Adjudication Panel has issued Ilie Nastase with a provisional suspension under the Fed Cup Regulations for a breach of the Fed Cup Welfare Policy at the Fed Cup by BNP Paribas tie in Constanta," read the ITF statement. "Under the terms of the provisional suspension, Nastase may not participate in the Fed Cup in any capacity with immediate effect, and shall be denied access to, and accreditation for, any ITF event including Fed Cup. The investigation by the Internal Adjudication Panel is ongoing. No further comment will be made during the investigation.'

Germany d. Ukraine, 3-2 - World Group I Play-Offs, Stuttgart, Germany

Elina Svitolina kept up her flawless form against World No.1 Angelique Kerber, but it wasn't enough for Team Ukraine, who fell in the face of an unstoppable Julia Goerges at the Porsche Arena.

After Goerges recovered from a set down to oust the reigning Dubai Duty Free Tennis Championships winner on Saturday, the former Stuttgart champion edged past Lesia Tsurenko in straight sets to help clinch their place in World Group I next year.

Still, it was a solid week for Svitolina, who has now won her last four matches against the US Open champion.

"Kerber struggled to find any rhythm against an opponent who took her chances with greater success, particularly from the baseline," noted FedCup.com's Jeff Kavanagh. "Svitolina also committed less than half of the unforced errors of her opponent in the second set - 6-16 - and will feel mightily satisfied at a job well done against a player ranked 12 places above her in the world."

France d. Spain, 4-0 - World Group I Play-Off, Roanne, France

Kristina Mladenovic led France to a stunning win over France, losing just three games in her her two wins over Sílvia Soler-Espinosa and Sara Sorribes Tormo.

"Since the beginning of the year, I've become another player on the court and have really improved a lot," Mladenovic said. "The way I've been playing this weekend is the way I've been playing all season. Hopefully, I can keep shining like this in front of the home crowds for the big Grand Slam coming up."

"The atmosphere in the entire team has been great and I'm sure this team has a big future. I'm trying to be the best I can be tennis wise and being a leader for the team with what I'm showing this weekend."

In between Pauline Parmentier was decisive over Sorribes Tormo, 6-4, 6-2 to help keep the 2016 finalists in World Group next year.

Belgium d. Russia, 3-2 - World Group I Play-Off, Moscow, Russia

Elise Mertens led Belgium to a stunning upset in Russia's capital city, pairing with An-Sophie Mestach to shock Daria Kasatkina and Elena Vesnina in the deciding doubles rubber.

Fresh off her win over Anastasia Pavlyuchenkova on Saturday, Mertens recovered from a tough second set to upset Vesnina, the reigning BNP Paribas Open champion, in three. Up next was Kasatkina, who was playing her first match since winning her maiden title at the Volvo Car Open. From a set down, she leveled the tie in emphatic fashion against Maryna Zanevska to book the deciding doubles.

Kasatkina and Vesnina were a formidable team last season, even ending Martina Hingis and Sania Mirza's 41-match winning streak at the Qatar Total Open, but Mertens and Mestach proved too strong, edging past the Russians in a second set tiebreak.