Canadian men's 4x100 relay team in line for high-velocity dress rehearsal at Diamond League London

If Canada fields its A team, and every member is two months sharper than they were the last time they performed as a unit, then the men's 4x100 relay at this Saturday's Diamond League track meet in London could turn into a clinic.

It's a rare meet on the circuit that features men's and women's relay races, and even without entries from heavyweights U.S. and Jamaica we can count on a bruising competition. Japan will line up, as will the Netherlands and France. Great Britain plans to field two teams in the men's event.

The last time we saw Canada in action, they outclassed all those squads. Aaron Brown, Jerome Blake, Brendon Rodney and Andre De Grasse combined to win silver at the World Relays in May, running 37.89 seconds, and trailed only a powerhouse team from the U.S. If that foursome is healthy and performing up to their potential, they're a medal threat in any global final.

But reaching the podium next month in Paris isn't just a matter of best-case-scenario peak performance. It's also a question of depth, and team Canada needs to find answers.

A pessimist might see a dilemma for Athletics Canada's relay coach, Glenroy Gilbert. An optimist sees an opportunity. Whatever team the U.S. fields in Paris will have more raw speed than Team Canada, but in the relay continuity is king and queen. Saturday's race, then, presents a chance to gain valuable data about which grouping of runners might perform best under high pressure, and that information could help propel Canada back to the podium in Paris.

Last summer at the world championships in Budapest, a lack of depth hamstrung Canada's chances at a relay medal.

De Grasse was famously labouring through a lacklustre season when he entered worlds. He qualified for the final in