Alphonso Davies, Jonathan David left off Canada's provisional Olympic soccer qualifying roster

Alphonso Davies had a coming-out party Tuesday in Bayern Munich's Champions League win over Chelsea. Jonathan David scored a hat trick for KAA Gent on the weekend and leads the Belgium League in scoring.

It's been a good week for Canadian soccer.

But success comes at a cost with demands on top players. And so while eligible to play, Davies and David won't be part of the Canadian men's upcoming Olympic qualifying campaign.

Olympic men's soccer qualifying has been an under-23 competition since 1992. Beginning in 1996, teams that qualified for the Olympics were allowed to field three players over the age limit.

Canada named its 50-man provisional roster Wednesday for the CONCACAF Men's Olympic Qualifying Championship, which runs March 20 to April 1 in Guadalajara, Mexico.

Davies, 19, and David, 20, were absent from the list after making headlines this week.

Davies, who has won 17 caps for Canada in a variety of positions, including wide forward, drew rave reviews for his pacey performance in Bayern's 3-0 win at Stamford Bridge. The young Canadian was a standout at left back, setting up Robert Lewandowski's third goal with an electric run that left defenders in his wake.

"In all moments of the game now, he's just starting to show mastery — at 19 years of age," said Canada coach John Herdman. "And he's only been in [the left back] position for a period of time.

Scoring spree

"He's a lot more than just a guy who can run 36 kilometres per hour," he added. "He's starting to become the full package."

David, who has 11 goals in 12 senior appearances for Canada, went on a scoring spree against Sint-Truidense VV to up his Belgian league season total to 18. He has been linked to several big clubs in recent days.

Herdman, however, says there's more to David than goals.

"People will see when you start to peel beneath the layers of what Jonathan offers, there's flexibility in how he can play in a number of positions," he said. "I know that's what me and Mauro [Olympic coach and senior assistant coach Mauro Biello] had seen in the first camp. Just how smooth he was, whether he was a wide forward or playing as No. 9 or a false No. 9. He just has this football IQ.

"And I think when scouts and clubs are looking, they'll see it's the statistics of what he can do consistently in a game at a high level that will be really be attracting them as well as the goals."

Canada's Olympic team camp and part of the qualifying tournament falls outside the FIFA international window (March 23-31), meaning clubs don't have to release their players for the entire stretch.

Complicating matters is the fact that Canada's senior side has matches scheduled March 27 and 31 against Trinidad and Tobago in Langford, B.C. While they are friendlies, they are important because Canada is chasing El Salvador in the rankings in a bid to make the Hex, the most direct route of World Cup qualifying in the region.

Davies and David will feature in those matches.

'Once-in-a-lifetime opportunity'

So would Canada Soccer have named the duo to the Olympic qualifying roster had all the obstacles been removed or have the talented youngsters moved past the under-23 level?

"There's an element of that progress, but the Olympics are the Olympics," said Herdman. "It's a pinnacle event. It's a once-in-a-lifetime opportunity for players, particularly with it being U-23.

"And it's certainly something our country rallies around. Everyone gets excited when that Olympic period's in. So there would be nothing better than to see a men's team at an Olympics competing for Canada."

It's a tough competition to make, with just 16 men's teams in the field.

Canada has taken part in just two of the 24 Olympic men's soccer competitions and has failed to qualify for the last eight Olympics. Its last participation came in 1984 in Los Angeles.

Of the 50 players on the provisional list, 19 have been called into camp by the senior side and 16 have won a senior cap.

Vancouver Whitecaps defender Derek Cornelius leads with 13 caps while Liverpool's Liam Millar has eight. Marcus Godinho (FSV Zwickau, Germany) and Kamal Miller (Orlando City) have five apiece.

Canada will name its 20-man Olympic qualifying tournament roster on March 11, two days before opening camp in Mexico. Canada opens against El Salvador before facing Haiti and Honduras.

CONCACAF qualifier completes men's field

Canada will play in Group B at the CONCACAF qualifier. Group A features Mexico, the U.S., Costa Rica and the Dominican Republic.

After round-robin play, the first- and second-place finishers in the two groups will advance to the crossover semifinals. The semifinal winners will book their ticket for Tokyo.

The CONCACAF qualifier will complete the men's Olympic field.

Argentina, Australia, Brazil, Egypt, France, Germany, the Ivory Coast, New Zealand, Romania, Saudi Arabia, South Africa, South Korea and Spain have already qualified and will join host Japan at the Games.

Should Canada qualify, Davies and David could still be part of the Olympic roster. But the July 23-Aug. 8 competition again falls outside a FIFA window. Most European teams will be in pre-season training.

Herdman recalls trying to pry players out of their clubs for the prestigious under-21 tournament in Toulon, France.

"It is very difficult. And ultimately the pro clubs will make the final decisions on player availability because it falls outside a FIFA window," he said. "The tournament just overlaps the required window."

"This is a challenge for every confederation, to try and fit tournaments into ... a 10-day FIFA window," he added. "You practically can't do it to fit safely the games in."

The Canadian women qualified for Tokyo by virtue of beating Costa Rica in the semifinal of their Olympic qualifier earlier this month in California.

Provisional Canada roster

Goalkeepers

• Sebastian Breza, SSD Potenza Calcio (Italy)
• Thomas Hasal, Vancouver Whitecaps FC Academy
• Matthew Nogueira, CS Maritimo (Portugal)
• James Pantemis, Montreal Impact (MLS)
• Dayne St. Clair, Minnesota United FC (MLS)

 Defenders

• Diyaeddine Abzi, York 9 FC (CPL)
• Zorhan Bassong, Cercle Brugge KSV (Belgium)
• Gabriel Boakye, FC Koln II (Germany)
• Robert Boskovic, Toronto FC II (USL)
• Zachary Brault-Guillard​​​​​​, Montreal Impact (MLS)
• Derek Cornelius, Vancouver Whitecaps (MLS);​​​​​​
• Kadin Chung, Pacific FC (CPL)
• Julian Dunn, Toronto FC (MLS)
• Marcus Godinho, FSV Zwickau (Germany)
• Daniel Kinumbe, Halifax Wanderers FC (CPL)
• Yohan Le Bourhis, Winnipeg Valour FC (CPL)
• Emile Legault, unattached
• Thomas Meilleur-Giguere, Pacific FC (CPL)
• Kamal Miller, Orlando City (MLS)
• Terique Mohammed, Toronto FC II (USL)
• Callum Montgomery, FC Dallas (MLS)
• Rocco Romeo, Toronto FC (MLS)
• Frank Sturing, NEC Nijmegen (Netherlands)
• Karifa Yao, Montreal; Impact (MLS)

Midfielders

• Clement Bayiha, Montreal Impact (MLS)
• Tristan Borges, Oud-Heverlee Leuven (Belgium)
• Mathieu Choiniere, Montreal Impact (MLS)
• Aidan Daniels,  Colorado Switchbacks (USL)
• Liam Fraser, Toronto FC (MLS)
• Patrick Metcalfe, Vancouver Whitecaps (MLS)
• David Norman, Inter Miami CF (MLS)
• Noble Okello, Toronto FC (MLS)
• Harrison Paton, Ross County FC (Scotland)
• Ryan Raposo, Vancouver Whitecaps (MLS)
• Shamit Shome, Montreal Impact (MLS)
• Noah Vehoeven, Pacific FC (CPL)

Forwards

• Theo Bair, Vancouver Whitecaps (MLS)
• Charles-Andreas Brym, Lille OSC B (France)
• Tajon Buchanan, New England Revolution (MLS)
• Terran Campbell, Pacific FC (CPL)
• Malik Johnson, Tampa Bay Rowdies (USL)
• Aramis Kouzine, unattached
• Liam Millar, Liverpool (England)
• Jayden Nelson, Toronto FC (MLS)
• Easton Ongaro, FC Edmonton (CPL)
• Jordan Perruzza, Toronto FC II (USL)
• Jacob Shaffelburg, Toronto FC (MLS)
• Ballou Jean-Yves Tabla, Montreal Impact (MLS)
• Kris Twardek, Bohemian FC (Ireland)
• Dario Zanatta,​​​​​​​ Partick Thistle (Scotland)