We started with 24. Now EuroBasket 2015 is down to its Elite Eight.

The quarterfinals start on Tuesday in Lille, and Serbia, Greece and hosts France have so far proven unbeatable.

But, with the possible exception of Latvia, every side remaining has illustrated its credentials to go all the way to Sunday's final. And with the top seven finishers assured of at least a spot in one of next summer's FIBA Olympic Qualifying Tournaments, one more win brings a guaranteed prize from the event.

Here's a look at Tuesday's and Wednesday's matchups (click here for the full schedule).

TUESDAY

Greece (6-0) vs. Spain (4-2)

Memories last.

"In 2007, Spain stole victory from us," Greek center Ioannis Bourousis said. "That still hurts."

Revenge would be sweet for an unbeaten Greek side that battered Belgium in the second half of their Round of 16 matchup. And despite Pau Gasol's 30-point flurry to see off Poland Saturday, Spain still looks vulnerable if its backcourt cannot contribute additional offense in its bid to reach the final four. Even more so if Rudy Fernandez (back) is confined to the bench.

"It's clear that the main objective is getting into the Olympic qualifier and to be able to go to the Games," said Gasol, who is playing through a pinched calf. "But I am an ambitious person and I want this team to be in the semifinals and to be fighting for the medals. If we work well together, we play with intelligence and we compete to death for every ball. I believe we have a chance."

Greece is certainly a favorite, especially with their depth and collective play that has no player averaging more than 11 points per game, while giving up an ungenerous 65.7 points per contest.

"It's a very diverse team," Greece (and Sacramento Kings) center Kostas Koufos declared. "We have a great mixture of guards and post players. Anyone can step up in any given moment. That's what's so good about this team, especially with the tough schedule. One guy can step up the next day, someone else the next."

EDGE: Greece.

France (6-0) vs. Latvia (4-2)

This is a mismatch on paper, especially with Latvia's players openly satisfied with reaching this stage.

But French (and Utah Jazz) center Rudy Gobert insisted: "[The Latvians] shoot a lot of 3s. They're always physical. That's tough for us."

The hosts have yet to put together anything resembling a perfect game with Tony Parker frequently outshined by ex-Spurs teammate Nando de Colo. The upside is that others have contributed even in Parker's moments of struggle on a roster that is giving up a tournament-low 64.7 points per game.

"Tony brings a lot of attention," Gobert added. "So the consequence is that it makes it easier for all his other teammates, He's not been making shots but he's not been having bad games. We have guys coming off the bench, impacting on the game, playing great defense. That's one of the great strengths of our team."

EDGE: France.

WEDNESDAY

Czech Republic (4-2) vs. Serbia (6-0)

How about that Jan Vesely? Lost in the NBA before departing for Turkey last summer, the former No. 6 overall draft pick has been at the heart of the Czechs' unexpected advance behind a mix of experience and promising youth. In the last round, they stared down the talent of Croatia and casually flicked it away.

Unbeaten Serbia has probably acquired the status of championship favorites, although Finland made them wobble in the first half by pushing out in transition. The Czech Republic can take aim without any huge expectations.

"The thing is we've tried to play hard basketball while still enjoying the game," Vesely said. "We've kept it simple. We've not put pressure on ourselves. We've had good success with beating Croatia, but we don't want to stop here. We'll fight to the last second and see where we go."

EDGE: Serbia.

Italy (4-2) vs. Lithuania (5-1)

With seemingly half of Lithuania dressed in green and traveling to Lille, relief propelled a wave of air into the arena Sunday when their national side scrambled past Georgia 85-81, courtesy of 34 points and a heap of magic from Real Madrid forward Jonas Maciulis.

"I hope in the next game we'll find someone else who can step up," said Lithuania head coach Jonas Kazlauskas. Perhaps that someone could be Jonas Valanciunas in his matchup with Andrea Bargnani, or maybe someone else, with the opportunity to get closer to a berth at Rio 2016.

After taking EuroBasket silver two years ago, the goals are more short-term.

"You want to be in those competitions," Kazlauskas acknowledged. "But it's a long way until the Olympics."

EDGE: Lithuania