The 27-year-old Jamaican, who lives and trains in Europe, finished third in the shot put in the newly formed Continental Series. His mark of 20.01 was only two centimetres behind Poland’s Jakub Szyszkowski’s 20.03m.
Tomas Stanek of the Czech Republic took the gold medal with a mark of 20.19m.
Miller said he was just glad to be competing once more.
“Felt great going into the competition,” he said. “However, a lot of injuries just showed up a day before and on the day of the competition.
“All and all just have to give thanks, but I toughed it out.”
With the solid performance behind him, Miller said he would now focus on resting and preparing for background training.
Dallas Mavericks star Doncic had 31 points, 13 assists and 11 rebounds as Slovenia defeated hosts Lithuania 96-85 in Kaunas on Sunday.
In other qualifying tournament finals, Italy stunned Serbia 102-95, Germany defeated Brazil 75-64 and the Czech Republic downed Greece 97-72.
With those countries headed to Tokyo later this month, the field is now set.
Group A will consist of defending champions the United States, France, Iran and the Czech Republic, with Australia, Nigeria, Germany and Italy in Group B.
In Group C, hosts Japan will contend with Argentina, Spain and Slovenia.
Doncic and Slovenia face a difficult group, as Spain won the bronze medal at Rio 2016 after a close loss to the USA in the semi-finals, but the 22-year-old was ecstatic after qualifying.
"I don't care about the MVP," Doncic said. "We won here. We're going to the Olympics, the first time in our country.
"It's amazing. I think every kid dreams about being in the Olympics. I did too. So, here we are. We fought really, really hard, and I think we deserve to be here."
Italy's defeat of short-handed Serbia, who were missing NBA MVP Nikola Jokic, was the biggest upset of the final qualifying round.
Serbia were beaten finalists against Team USA in the Rio 2016 gold medal game, while Italy are in the Olympics for the first time since taking silver in Athens in 2004.
The race was won by Great Britain’s Reece Prescod in a personal best 9.93 while fellow British teammate and former Kingston College sprinter Zharnel Hughes was third in the same time as Blake.
Jamaican Tokoyo Olympic finalist Candice McLeod ran a season’s best 50.38 for second in the Women’s 400m behind Poland’s Natalia Kaczmarek who ran a personal best 50.16. Another Polish athlete, Anna Kielbasinska, was third in 50.38, equaling her own personal best.
Puerto Rican Olympic champion Jasmine Camacho-Quinn sped to 12.56 for victory in the Women’s 100m hurdles ahead of Poland’s Pia Skrzyszwoska who ran a personal best 12.65 and the USA’s Nia Ali (12.69).
It was a Caribbean 1-2 in the Men’s Javelin as Grenadian 2019 World Champion Anderson Peters continued his fine form this season with a throw of 87.88m to win ahead of Trinidadian 2012 Olympic Champion Keshorn Walcott (84.77m). Germany’s Julian Weber was third with 83.92m.
Cuba’s Maykel Masso won the Men’s Long Jump with 8.14m ahead of the Czech Republic’s Radek Juska (8.11m) and France’s Augustin Bey (8.00m).
Italy’s Marcell Jacobs and Canada’s Andre De Grasse, the Olympic gold medallists over 100m and 200m respectively, will clash over the shorter distance, then De Grasse will double up by contesting his specialist event.
Gardiner, meanwhile, will take on world indoor champion Alexander Doom over one lap of the track.
The Bahamian, who has a season’s best of 44.45, could be pushed by the Belgian, who won in Marrakesh last week with a lifetime best of 44.51.
Not including the few races where he has pulled up injured, Gardiner has been undefeated over 400m since the 2017 World Championships.
Elsewhere, Jacobs has had just two individual outings this year, the latest being a 10.07 season’s best to win in Rome last weekend.
That makes the Italian the fastest of the Ostrava field this year on season’s bests, though he’s also one of four men in the line-up with a sub-10-second PB.
De Grasse, meanwhile, has a best this year of 10.11 and recently finished second at the Diamond League meeting in Marrakesh.
Britain’s Reece Prescod, who set his PB of 9.93 in Ostrava when winning in the Czech city two years ago, will be one to watch, as will Jamaica’s Ryiem Forde.
Later in the evening, De Grasse will take on Jamaica’s Andrew Hudson and Britain's Nethaneel Mitchell-Blake in the 200m.
In the men’s javelin, home favourite Jakub Vadlejch will take on European champion Julian Weber and two-time world champion Anderson Peters.
Four-time global medallist Vadlejch recently won in Doha with 88.38m, which puts him just one centimeter ahead of Weber on this year’s world list. Peters is close behind with a best of 86.62m.
Team USA's emphatic victory sealed their place in the quarter-finals as the second-placed side in Group A and ensured they will not face one of the pool winners.
Durant put up 23 points and six assists, overturning an early deficit, while Tatum led the team with 27 points, including five three-pointers.
Team USA's 20 threes represented the fourth time they have managed as many in an Olympic game, also doing so against Argentina in 2012 (20), Lithuania in 2004 (21) and Nigeria in 2012 (29).
Due to the margin of defeat, the Czechs – who threatened an upset before falling away dramatically – will not progress into the next round as one of the best third-placed sides.
ROTATION GAME
France were able to rest some star names as they progressed. Les Bleus had won their opening two games and completed a clean sweep in Group A with a 79-62 victory over Iran.
Only one player – Timothe Luwawu Cabarrot – played more than 20 minutes, with star men Evan Fournier and Rudy Gobert given limited game time.
Nando De Colo enjoyed a highly efficient cameo in his 15 minutes on court, scoring 10 points on 100 per cent shooting while adding five rebounds and five assists.
Iran talisman Hamed Haddadi finished off his Olympic campaign with an 18-point showing, but it was not enough to keep his team in the tournament.
France have already beaten the United States, but Fournier dismissed the suggestion they are gold medal favourites.
"To be honest, I'm not even focused on the gold medal, just the quarter-finals," he said. "Any team that we are going to play there will have its strengths and weaknesses, but I can't tell you who I would prefer there because we don't even know who's going to be there."
AUSTRALIA CLAIM TOP SPOT
Patty Mills scored five threes in a haul of 24 points as he led Australia to an 89-76 victory over Germany.
The Boomers needed victory to secure first place in Group B and they did so with a 13-point margin to ensure they will be seeded in the quarter-final draw on Sunday.
Despite defeat, Germany will go through as one of the best third-placed teams.
Mills is heading into unrestricted free agency in the NBA, but his sole focus is on propelling Australia towards a medal.
"This is a lifetime of work in a matter of a couple of weeks. I'm making sure there are no distractions for me or my team-mates," he said.
MANNION SEALS FOURTH-QUARTER FIGHTBACK
Italy clinched a spot in the last eight by overturning an eight-point deficit at the start of the fourth quarter to beat Nigeria 80-71 in Group B.
Nico Mannion scored 14 points in 16 minutes, including a vital late effort from deep to help seal Italy's comeback success as Nigeria ended winless following a 24-8 fourth quarter.
"I think everybody is surprised with the way he's playing, he's showing everybody that he's a great player. Also, he's only 20 years old," Achille Polonara said of Golden State Warriors guard Mannion.
"I hope that he can help us like this in the next game, too. He's a great guy, he's very happy to stay with us, and we're very happy to have him."
Team USA arrived in Japan looking to strike gold for a fourth straight Games, yet their build-up had been anything but straightforward. Exhibition defeats to Australia and Nigeria raised concerns before travelling, while COVID-19 protocols ruled out Bradley Beal and Kevin Love was replaced at late notice by JaVale McGee.
Still, a squad including Kevin Durant, Damian Lillard and Jayson Tatum – as well as Khris Middleton and Jrue Holiday from the Milwaukee Bucks, the newly crowned NBA champions – saw the reigning champions listed as favourites.
France, though, caused an early upset at the start of the tournament. Evan Fournier starred with 28 points to help his team triumph 83-76 at the Saitama Super Arena.
There were wins for Australia and Italy too on Sunday, as well as a victory for the Czech Republic.
Big names come up short in shock defeat
Team USA had rounded out their build-up to the Games by beating Spain, yet there will be concerning signs for head coach Gregg Popovich following a flat performance against France.
They were successful with just 41 per cent of their two-point attempts and landed only 10 of the 32 shots put up from beyond the arc. Despite the shooting issues they still led 45-37 at half-time, only for the game to turn in a third quarter where they mustered a paltry 11 points.
Durant finished up with 10 points on 4-of-12 shooting, while Lillard had 11. The latter's slip that caused a turnover in the closing seconds when down by four rather summed up a disjointed performance from the entire roster, leading to a first loss at the Olympics since going down to Argentina at Athens 2004.
Devin Booker, who had helped the Phoenix Suns reach the NBA Finals, landed only one of his six attempts from the field, with Holiday (18 points) finishing as the USA's leading scorer having only joined up with the team on the day of the game.
Also in Group A, the Czech Republic recorded an 84-78 victory over Iran.
Ingles impressed, but Nigeria come up short
Nigeria had defeated both Argentina and the United States ahead of the Games, raising hopes of making an impact in Japan.
However, able to knock down just 29 per cent of their attempts from deep, they struggled to keep pace with Australia, scoring only 27 points in the entire second half as they went down 84-67.
Still, Joe Ingles – who had 11 points for Australia – praised the Nigerians for their display, particularly on defense as they forced 21 turnovers. Patty Mills was the leading scorer in the game, finishing with 25.
"You have to give a lot of credit to Nigeria, with how they played and the style they play," Ingles said. "They are up and in, they are athletic and get up the floor, and they obviously have a great coach [in Mike Brown].
"I think a lot of people underestimate the team and the country. They are a really good basketball team."
Meanwhile, Italy opened their Group B campaign with a 92-82 victory over Germany. Simone Fontecchio led the way with 20 points, including landing all five of his three-point attempts.
