![Team captain Lleyton Hewitt, top, celebrates with Nick Kyrgios of Australia after he won his match against Sam Querrey ...](/web/20170415114943im_/http://www.smh.com.au/content/dam/images/g/v/h/4/0/g/image.related.wideLandscape.460x259.gvh3ec.png/1491756256675.jpg)
Davis Cup fervour transforms Kyrgios into Hewitt's leading man
Nick Kyrgios knows talking won't be enough to prove to his critics he is evolving as a player and a person, so in Brisbane he walked the walk as he spearheaded the quarter-final victory over the United States.