Stefanos Tsitsipas has reappointed his father, Apostolos, as his coach after a short collaboration with Goran Ivanisevic. Tsitsipas faced criticism from Ivanisevic after a poor performance at Wimbledon, leading to their split. Under his father's coaching, Tsitsipas had previously reached number three in the world but has since dropped to number 30. Tsitsipas expressed regret over their previous separation and acknowledged the challenges of their relationship. Teljes cikk (bbc.com europe)