De Grasse, Blake take gold and silver in Poland

Andre De Grasse and Jerome Blake were on top of the podium at the Kamila Skolimowska Memorial track meet in Poland this weekend

Athing Mu runs American record at Prefontaine Classic

The 19-year-old phenom has won seven straight races since turning pro

Grant Holloway upset in the men’s 110m hurdles in Tokyo

Meanwhile, Canada’s men’s 4 x 100m relay team placed second in their heat to advance to the final