Top seed Alexander Zverev saved all 12 break points he faced as he advanced into the semi-finals of the ATP tournament in Los Cabos, 6-3, 6-4 over Australian Thanasi Kokkinakis. Zverev wrapped up matters at the Mexican venue shortly before midnight Thursday on his third match point. Olympic champion Zverev helped Germany win the mixed team United Cup last month and is now aiming for his first individual title of the year. He was a semi-finalist at the Australian and only returned this week from an illness. In the semi-finals, Zverev faces another Australian in Jordan Thompson, who recovered fr…