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."
|Real Madrid? You never know what the future holds - PSG´s Mbappe|
|Inter lacked quality in disappointing Sassuolo draw - Spalletti|
|Walton has one goal for Lakers-Rockets matchup: Keep Harden under 50 points|
|CAF Champions League Review: Simba learn Vita lesson as Sundowns find form|
|Bayliss relishing pressure of World Cup and Ashes to finish England reign|
|Guardiola keen to keep City rhythm and challenge on four fronts|
|Fifita backs Johnson to inspire the Sharks|
|For Real Madrid, nothing is impossible - Solari refuses to give up in title race|
|Inter 0 Sassuolo 0: Spalletti´s side labour at sparse San Siro|
|Marshawn Lynch will continue playing ´if it works out´|
|Simeone excited by improving Atleti|
|Jones ´cautiously optimistic´ over Farrell ahead of Ireland clash|
|Sarri questions Chelsea motivation after Arsenal surrender|
|Emery urges Arsenal to find balance after downing Chelsea|
|Koscielny hails Arsenal fighting spirit in Chelsea win|
|Pellegrini: It was not a good idea for Arnautovic to play|
|Iran v Oman: We´re not satisfied yet, says Al Mahaijri|
|Carbery sends Munster through and ends Exeter´s lingering Champions Cup hopes|
|Dyche defiant despite offside call|
|Hasenhuttl rates Everton win as Southampton´s best|
|Benitez looking up the table after Schar inspires win over Cardiff|
|RB Leipzig 0 Borussia Dortmund 1: Witsel restores six-point cushion|
|Swansea City 1 Sheffield United 0: McBurnie punishes wasteful Blades|
|Cardiff sign Sala from Nantes for club-record fee|
|Arsenal 2 Chelsea 0: Lacazette and Koscielny fire Gunners to rousing derby win|
|Huesca 0 Atletico Madrid 3: Dominant Atleti keep pressure on Barca|
|Rashford arguably league´s best striker with Kane out - Solskjaer|
|Hafeez plays steady hand as Pakistan punish Proteas´ patient approach|
|Klopp: Exceptional Salah would have scored even more up front!|
|Suspected ´serious´ Verratti injury leaves Tuchel with mixed emotions|
|We needed to rediscover our best form - Ramos pleased for Real Madrid fans|
|City bought Guardiola four full-backs! - Mourinho aims dig at Man Utd transfer policy|
|Valverde ´not frustrated´ amid De Jong & Vela links|
|Championship Review: Leaders Leeds beaten at Stoke as Villa end Hull run|
|Bournemouth rode their luck, admits Howe|
|Barca boss Valverde calls for clarity on RFEF rules|
|Bears rack up 107 points in routing Enisei en route to quarter-finals|
|Paris Saint-Germain 9 Guingamp 0: Verratti injured for rampant champions|
|Solskjaer: I´ll remember managing United for the rest of my life|
|Palace win a ´massive relief´ for Liverpool boss Klopp|
|Salah fourth fastest to 50 goals in Premier League history|
|Real Madrid 2 Sevilla 0: Solari´s side take over third spot|
|Watford 0 Burnley 0: Wood denied winner by contentious call|
|Liverpool 4 Crystal Palace 3: Salah reaches 50 thanks to Speroni shocker|
|Newcastle United 3 Cardiff City 0: Schar double moves hosts out of bottom three|
|Southampton 2 Everton 1: In-form Saints steer clear of trouble|
|Bournemouth 2 West Ham 0: Wilson and King sink Pellegrini´s men|
|Manchester United 2 Brighton and Hove Albion 1: Record-breaking win for Solskjaer|
|Pelicans star Anthony Davis out for one to two weeks with sprained finger|
|Verratti hobbles off for PSG against Guingamp|
|Brook ponders next move after missing out on Khan|
|Mick Schumacher: The Ferrari academy graduates who made it to F1|
|Thailand v China: Lippi aims to overcome War Elephants and reach last eight|
|I deserved red card, says Wolves boss Nuno|
|Mick Schumacher joins Ferrari Driver Academy|
|Jared Goff not worried about Superdome noise: ´When it´s loud, we love it´|
|Rooney urged Rashford to run at defenders|
|Former Springbok Lambie retires from rugby aged 28|
|Spygate: EFL confirms 11 clubs have made contact about Leeds|
|When it´s loud, we love it - Goff ready for New Orleans noise|
|Wolves 4 Leicester City 3: Jota hat-trick drama piles pressure on Puel|
|´Asparagus´ Zverev joins frustrated Djokovic in round four|
|Lowry takes Abu Dhabi title at the last after ding-dong Sterne battle|
|Rooney: United should go "all out" for Pochettino|
|Djokovic frustrated by ´unnecessary´ Australian Open floodlights|
|Jordan v Vietnam: Park expecting ´aggressive´ encounter|
|Serena and Halep book blockbuster, Osaka won´t throw in the towel|
|Brady: Mahomes has had ´spectacular season´|
|Halep not intimidated by Serena anymore|
|Farrell´s Six Nations preparations hit by thumb injury|