Complex sentence: Ančić started training in June with his Swedish coach, Fredrik Rosengren, in the Slovenian Alps; and after he withdrew from two tournaments in July, Mario returned in August at Canada Masters and at Cincinnati Masters, where he lost in the second rounds.
Split into simpler sentences: Ančić started training in June with his Swedish coach, Fredrik Rosengren, in the Slovenian Alps. After he withdrew from two tournaments in July, Mario returned in August at the Canada Masters and the Cincinnati Masters, where he lost in the second rounds.