This party was meant to be all about Andy Murray coming home to Scotland , but the guest of honour turned out to be the 28- year-old son of a London cabbie . Murray responded to the earsplitting support from the people who love him the most by delivering a winning start for Great Britain against America in their Davis Cup first-round knockout . But the ex-Wimbledon champion ’ s four-set win over Donald Young turned out to be a mere warm-up act , as Glasgow 's Emirates Arena screamed on James Ward as he battled John Isner to a standstill to put the home side 2-0 up with three rubbers to play . James Ward dug out a sensational fightback against John Isner on Friday night . Andy Murray celebrates epic victory with team-mate Ward . Ward embraces Great Britain captain Leon Smith after near five-hour thriller . An emotional Ward finally clinched his sixth match point to sensationally beat the world No 20 6-7 , 5-7 , 6-3 , 7-6 , 15-13 . He is transformed when in national colours . Murray seemed close to tears as he embraced him at the end of a career-best win that makes GB firm favourites to reach the quarter finals . Ward so often saves his best for Davis Cup , to the extent that it is fairly staggering to think that he has never cracked the world ’ s top 100 . ‘ This is by far the best atmosphere I ’ ve ever been part of in the Davis Cup , ’ said Ward . ‘ I ’ d prefer not to play five sets every time but the crowd was incredible and really helped. ’ Against the USA in San Diego 13 months ago he put another tall man , Sam Querrey , to the sword with a comeback win to put Great Britain 2-0 up . Isner , though , is a tougher proposition altogether . American No 1 John Isner let slip a two-set lead against James Ward in Glasgow . World No 111 Ward did little wrong in the first two sets , except for blowing the five points that followed him going 4-2 up in the opening tiebreak . One thing apparent in this match was how Britain have got the court surface right in making it relatively slow and low , and he fashioned his rebound by keeping the ball skidding and attacking the American ’ s weaker backhand side . The 111-minute deciding set became a tug of war in which neither man would yield . Isner is , after all , the player who once won an 11 hour five minute match over Nicolas Mahut at Wimbledon . Ward forced two match points at 5-4 , one at 10-9 and one at 11-10 , then needed to save two break points at 11-11 before breaking to love to clinch the match . GB captain Leon Smith said : ‘ It ’ s really tough for the USA now but they have Jim Courier as captain and he will not let them go down without a fight. ’ Andy Murray and Jamie Murray roared on James Ward to victory in five-set thriller . The question now is whether Murray will put himself on the line in today ’ s doubles with brother Jamie for what would be a highly charged encounter with the world champion Bryan brothers . After Ward ’ s win he is surely much more likely to make way for Dom Inglot and save himself for tomorrow . Murray completed the first leg of his task when he took down USA No 2 Donald Young 6-1 , 6-1 , 4-6 , 6-2 in just under two hours . Apart from an untimely dip at the end of the third set , Murray was in imperious form against world No 47 Young . By the time he had finished the warm-up the crowd had joined in a rousing singalong to Runrig ’ s Loch Lomond , and for Murray it was the perfect preparation . He said . ‘ I used that energy and emotion very well at the beginning of the match . I had a bit of a lull but I couldn ’ t maintain the intensity I had in the first two sets. ’ Murray compared the feel of the occasion to what he experienced at the 2012 Olympics , and he responded in much the same way . It was certainly different to the lacklustre defeat by Croatian teenager Borna Coric in Dubai last week . Murray was ever so slightly more pumped up yesterday . It might still come down to Ward in a fifth and deciding rubber , but after yesterday evening ’ s heroics that that may not be necessary . Andy Murray had put Great Britain 1-0 up in tie by beating Donald Young 6-1 6-1 4-6 6-2 .
James Ward fought back from two sets down against John Isner . He dug out a sensational fightback to win 6-7 ( 4/7 ) 5-7 6-3 7-6 ( 7/3 ) 15-13 . Great Britain lead 2-0 against America in the 2012 Olympics first-round clash .