The 24-year-old could be out for six weeks as he recovers.
Michael Goolaerts died at age 23 Sunday night after suffering cardiac arrest during Paris-Roubaix.
How does this edition of Paris-Roubaix stack up to previous thrillers? Why couldn't Quick-Step chase Sagan?
The world of pro cycling is stunned by the tragic death of Michael Goolaerts, 23, who suffered heart failure during Paris-Roubaix.
Peter Sagan now has a pair of monument victories, in the Tour of Flanders and Paris-Roubaix.
A crash nearly ended his career back in 2014, Taylor Phinney finally claimed his first ever top 10 in Paris-Roubaix, finishing eighth.