Thanasi Kokkinakis delivered some first-class entertainment for the home fans at the Adelaide International 2 on Wednesday as he dispatched the top seed Andrey Rublev.Kokkinakis held his nerve after Rublev fought back to take the second set, eventually defeating the Russian 6-4, 3-6, 6-3 in one hour and 57 minutes for one of the biggest wins of his career.The Aussie wasted no time and secured the first set in just 39 minutes but ended up in a heated back and forth with the chair umpire after receiving a time violation.Despite a promising display in the second set, Rublev, the inaugural Adelaide International champion in 2020, appeared irritab …