Steve Kerr refused to blame injuries as the Golden State Warriors' eight-game winning streak was ended by the Milwaukee Bucks at Oracle Arena.
NBA champions the Warriors (10-2) were beaten 134-111, losing at home for the first time this season, having seen Draymond Green sit out with a sprained toe before Stephen Curry suffered a groin strain out on the floor.
Asked for an early read on Curry's situation, coach Kerr told reporters after the game: "I don't [have an update]. I think he's going to get an MRI tomorrow [Friday]."
But the coach's main concern was with Golden State's complacency, hoping defeat to the Bucks (9-2) should provide a reminder of the difficulties of the NBA.
"I don't think it had to do with Draymond [being absent]. It had to do with our overall focus," Kerr said.
"Obviously Draymond gives us everything that he does, but when you come out with a mindless intent and you're fouling and not executing against a really good team - a team that's hungry and on the rise - you're not going to fare very well.
"It was about our approach. Sometimes you've got to get hit in the mouth in this league to remind you how hard it is to win a game. I think that's what happened.
"I think we got a little complacent. We won the last eight, were feeling pretty good about ourselves, and it's one of those nights. It happens during the NBA season.
"It's a long year and we were playing a great team who lost just two nights ago in Portland [against the Trail Blazers].
"They were hungry to get out there and I thought they played exceptionally well defensively. We didn't execute well enough to generate any momentum and get our crowd into the game."
|Imperious Nadal blasts past Tsitsipas into Melbourne final|
|Former Cardiff boss Solskjaer praying for good news on missing Sala|
|Sanchez to face Arsenal as Solskjaer backs Gunners fans to spur him on|
|I did nothing wrong! - Pliskova stunned by ´unbelievable´ Osaka|
|Solskjaer optimistic about De Gea, Martial contracts|
|Young ready to lead Pacers in Oladipo´s absence|
|Kvitova breaking down mental barriers in Melbourne run|
|Neymar has ´painful recurrence´ of foot injury, PSG confirm|
|Sala search begins for third day|
|Pochettino fears VAR will ´annoy´ Premier League fans|
|Osaka through to Melbourne decider after Pliskova thriller|
|Tsitsipas Souvlaki official as Australian Open star is honoured in Melbourne|
|Pacers earn big win over Raptors, Oladipo injured|
|Harden pleased to entertain Knicks fans in 61-point display|
|Kvitova overcomes extreme heat for spot in Aus Open final|
|Man United have their club back – Scholes revels in Solskjaer revival|
|Harden matches another Chamberlain feat with 61-point game|
|Capitals give up fourth hat-trick in five games|
|Durant leaving Warriors would be ´great´ for NBA, says McGrady|
|McEnroe: Serena choked in Australian Open loss|
|De Jong an ´important addition´ at Barca, says Valverde|
|´Better outcome than we originally feared´ – Agent on Anthony Davis injury|
|Pacers sweating on Oladipo injury after Indiana star leaves on stretcher|
|De Jong: I spoke to PSG and City before signing for Barca|
|Guardiola wants finals habit at Man City|
|Lakers star LeBron won´t face Timberwolves|
|Valverde doesn´t regret resting Messi despite Barcelona loss|
|In my heart and in my prayers - Ben Yedder pays tribute to missing Sala|
|Real Madrid reclaim world´s highest-earning club title from Manchester United|
|Messi absence no excuse for Barcelona loss, says Suarez|
|Humble Higuain excited by Sarri reunion|
|He must not come and cry after – Goncalves unapologetic over Neymar injury|
|Serie A record-breaker under Sarri - the Opta numbers behind new Chelsea striker Higuain|
|PSG boss Tuchel ´worried´ after Neymar sent to hospital with another foot injury|
|Coles commits to New Zealand and Hurricanes until 2021|
|Guardiola praises City mentality on ´dangerous´ Burton pitch|
|England won ´attritional´ battle, says Anderson after latest landmark|
|AEK, Brose Bamberg secure last-16 spots|
|Sevilla 2 Barcelona 0: Resting Messi backfires for Copa del Rey holders|
|Sarri: Chelsea players agree with me on motivation comments|
|Morata asked to leave Chelsea a month ago, says Sarri|
|Paris Saint-Germain 2 Strasbourg 0: Neymar suffers injury scare in Coupe victory|
|Anderson´s four-wicket haul rocks Windies|
|Burton Albion 0 Manchester City 1 (0-10 agg): Holders coast through to clinch Wembley return|
|PSG´s Neymar hobbles off in Coupe de France clash|
|De Ligt bored of Ajax departure rumours|
|Piatek completes AC Milan move after Higuain exit|
|Super Bowl LIII: Rams RBs v Patriots RBs|
|Chelsea seal Higuain loan|
|Ismaily kicked out of CAF Champions League after fans throw stones, bottles|
|England star Itoje pens new Saracens deal|
|Palace keeper Hennessey charged over Instagram post|
|Chelsea warn supporters over anti-Semitic chanting ahead of Tottenham EFL Cup tie|
|Joshua primed to make call on next opponent|
|Super Bowl LIII: Brady v Goff|
|Sala search suspended as Cardiff chairman confirms club wanted different travel arrangements|
|Cruyff, Koeman, Kluivert - De Jong following pantheon of Dutch Barca greats|
|Sarfraz apologises for comments picked up by stump mic|
|Djokovic: Pouille deserves top-10 spot|
|Hazard must be more demanding if he wants to leave Chelsea, says Ballack|
|Celtics´ Kyrie Irving to sit out Cavs game with flu-like symptoms|
|Barcelona seal €86m De Jong deal|
|Vietnam v Japan: Moriyasu happy to keep doing just enough|
|Hendricks, De Kock and Steyn join up with Proteas squad|
|Lorenzo excited for ´new level´ at Repsol Honda|
|Fernando replaces injured Pradeep in Sri Lanka squad|
|China v Iran: Queiroz wants to exorcise 2015 quarter-final|
|Balotelli joins Marseille until the end of the season|
|Emery gives Monchi ringing endorsement amid Arsenal sporting director links|
|Larry Fitzgerald returning to Cardinals on one-year deal|