Stefanos Tsitsipas fended off Greek-Australian Thanasi Kokkinakis 6-7(5) 6-4 6-1 6-7(5) 6-4 and reached the third round of the Australian Open on Thursday. The fifth seed battled hard in a four-hour 32-minute epic against the 267th-ranked Kokkinakis. Fans were on the edge of their seats for the …

