With the victory, Lleyton Hewitt's men hold a 2-1 lead heading into the first reverse singles match between Kyrgios and world-number 12 David Goffin on Sunday night (AEST). I obviously had a very disappointing (US Open).
"I can honestly say winning a grand slam would not make me the happiest person on earth", he writes.
"As a team if you're going to win the whole thing, you need matches like this".
Nick Kyrgios has ripped apart the veneer of friendship between him and fellow Australian Bernard Tomic, saying his former Davis Cup teammate has "lost his way" and "doesn't make sense". "You can't get away from it", Fitzgerald said on the Channel 7 commentary.
Kyrgios stormed imperiously through the opening set, sending down eight aces without losing a point in five service games.
Steve Darcis has the power to turn this tie in favour of Belgium.
Cheered on by his home crowd, Goffin then went on to seal victory by taking the second and third sets 6-3 and 7-5 respectively.
Darcis managed to survive his first serve game but soon crumbled, allowing Kyrgios to tie things up.
The 80th-ranked Lajovic made a strong start and capitalised on Pouille's mistakes to prevail 6-1, 3-6, 7-6 (7), 7-6 (5). Goffin, ranked 12th in the world, has also been under an injury cloud since Roland Garros.
A fan of basketball, the team nature of Davis Cup has rekindled his interest and motivation, dismissing any injury issues with his shoulder as the weekend's semi-final is his priority.
Lajovic had cramps in his right foot towards the end of the fourth set and needed some help from Serbia player and captain Nenad Zimonjic to put his shoe back on after hitting an overhead victor for a 5-4 lead in the fourth-set tiebreaker.
The victor of this semi-final will go on to play either Serbia or France in the Davis Cup final.
Neither of the Belgians play a great deal of doubles but with Peers' regular Davis Cup partner Sam Groth not in the team, the Aussies will field a new-look doubles team.
Hewitt knows just how important Peers is to the Australian team in the tie, which begins on Friday night (AEST) on the indoor claycourts.
Pouille fought back level by claiming the second set, but it was Lajovic who came through tie-breaks in sets three and four to win 1-6 6-3 7-6 (9-7) 7-6 (7-5).
That's followed by French number one Jo-Wilfried Tsonga crossing swords with Davis Cup debutant Laslo Djere, the highest-rated Serbian at No.80 in the world.