Roundup: Canada picks up 10 medals in track and field at Pan Am Games

Canada tried hard Tuesday to keep pace with the leading Team USA at Toronto 2015 Pan American Games as the host country's gold-medal streak continued on Day 11.

Canada's track and field team got off to an impressive start Tuesday, walking off with four gold and 10 medals to push its medal count to 50 gold and 160 overall medals.

The United States remains atop at the medal ranking with 69 golds and 183 in total. Brazil is third with 32 golds and 110 in total, followed by Colombia, Cuba, Mexico and Argentina.

In north Toronto's Athletics Stadium, Toronto's Shawnacy Barber equalled a Pan Am record, clearing 5.80 meters to win gold in men's pole vault and Vancouver's Elizabeth Gleadle snagged gold in women's javelin with a throw of 62.83 meters on her sixth and final attempt.

Gleadle was trailing American Kara Winger when she stepped up to take her final javelin throw, clapping her hands to get the crowd going.

Canada earned more medals in evening competition, with Matt Hughes winning gold and Alex Genest taking silver in the men's 3,000-meter steeplechase and Mohammed Ahmed wining the men's 10,000 meters.

Hughes, from Oshawa, Ontario, finished the steeplechase in eight minutes 32.18 seconds with Genest, from Shawinigan, Quebec, right behind in 8:33.83. Cory Leslie of the U.S. won bronze. Ahmed, from St. Catharines, Ontario, won the 10,000 in 29:49.96.

Canadian sprinter Andre De Grasse ran 10.06 seconds in winning his 100-metre heat to qualify for Wednesday's semifinals.

The home men's basketball team opened with a comfortable 105-88 win over the Dominican Republic. Brady Heslip of Burlington, Ontario, led Canada with 24 points.

In beach volleyball finals, Mexico took gold in men's competition after defeating Brazil, and Argentina won women's gold besting Cuba.

Meanwhile, four more athletes have been kicked out of the Pan Am Games after testing positive for banned substances, the international organization which runs the quadrennial multi-sport competition said on Tuesday.

The four confirmed tests brings to eight the number of athletes removed from the Games for the use of performance-enhancing drugs.

Three of the positive tests came from the wrestling competition, Argentine Luz Vazquez, a bronze medal winner in the women's freestyle 69kg weight class; Nicaraguan Elverine Jimenez and Paraguay's Stephanie Bragayrac.

Honduran boxer Merin Zalazar produced the other positive test, according to a statement from the Pan American Sports Organization (PASO) on the Games' website.

Mexican weightlifter Cinthya Vanessa Dominguez Lara and baseball players Nelson Gomez (Puerto Rico), Mario Mercedes Castillo (Dominican Republic) and Javier Jesus Ortiz Angulo (Colombia) had earlier failed doping tests. Endi