The Canadian capital will host the event that is set to see 36 quota spots be awarded to the top two wrestlers in each Olympic category with the competition due to start tomorrow and conclude on Sunday (March 15).  

The event takes place less than a week after the same venue hosted the Pan American Wrestling Championships.

Six categories will be contested in the men's freestyle, with the same number of categories in the women's equivalent as well as the Greco-Roman wrestling. 

It also is a great opportunity for Americans to be part of the United States' Olympic trials set for April 3 and 4. 

Those who win the US an Olympic quota spot will also qualify for the trials. 

The Americans currently have four of the 18 quota spots already thanks to the performances of two of their men and women's freestyle wrestlers who secured their spots at last year's World Wrestling Championships.

Elsewhere in the Americas, Cuba hold two spots in the Greco-Roman categories and Colombia have one wrestler, Carlos Izquierdo, qualified in the men's 86 kilograms freestyle. 

The two quota spots still exist for other nations even if a Pan-American team has qualified already in a category.

A group of 12 nations for the Americas qualified for Rio 2016, with Cuba topping the medal table in the region with two golds and one silver ahead of the US with Canada also getting onto the medal table thanks to a gold in the women's 75kg, won by Erica Wiebe.

Wiebe is due to be back to gain a spot in Ottawa in front of a home crowd having lost just one bout internationally since 2014.