Nick Kyrgios eased past John Isner 7-5 7-6(5) 7-6(5) in a duel of big servers to fire Australia to a 2-0 lead over the United States in their Davis Cup quarter-final in Brisbane on Friday (April 7). <br /> <br />The Australian number one carried on from the early work of underdog compatriot Jordan Thompson who stunned Jack Sock in 6-3 3-6 7-6(4) 6-4 to give him the biggest win of his career and the hosts a flying start at a packed Pat Rafter Arena. <br /> <br />The 79th-ranked Australian clubbed 14 aces and 17 winners as he ground down Sock, the American world number 15. <br /> <br />Wayward Sock sprayed 66 unforced errors and he hammered a forehand wide of the line to give up match point before surrendering the contest with a backhand over the baseline. <br /> <br />Kyrgios, who was in ominous form during last month's U.S. hardcourt swing, blasted 20 aces to Isner's 15, largely defusing the towering American's serve to close out a slow-burning match in two hours and 24 minutes. <br /> <br />Isner battled to the end, saving a match point at 6-5 to take the third set into a tiebreak, then charging into a 5-2 lead. But Kyrgios wrapped up the match in style, mowing through five straight points and sealing victory with a thundering ace. <br /> <br />Hammering a ball into the roaring crowd, Kyrgios hugged captain Lleyton Hewitt and his thrilled team mates. <br /> <br />Australia are seeking a first Davis Cup title since 2003. <br /> <br />Results: <br /> <br />Jordan Thompson (Australia) beat Jack Sock (U.S.) 6-3 3-6 7-6(4) 6-4 <br /> <br />Nick Kyrgios (Australia) beat John Isner (U.S.) 7-5 7-6(5) 7-6(5)
