After break's recapture, mass bunch sprint plays out in Krakow.
Canadian is latest WorldTour pro to test positive, and is in self-isolation in his apartment in Monaco.
50km solo attack puts Belgian star into GC lead with one stage to go.
Sprinting is inherently dangerous, but more can be done to mitigate risks.
The world champion assumes overall lead with the hospitalization of Jakobsen and the disqualification of Groenewegen following stage 1.
Dylan Groenewegen apologizes for the crash that sent Fabio Jakobsen to the hospital while DQS manager Patrick Lefevere calls for legal action against the Jumbo-Visma sprinter.
WorldTour's first stage race since March will be held 'behind closed doors' with limited access for fans and journalists.