them to die, much less to die suddenly from that viral illness. also for people who do die, it ends up it s not usually sudden. in fact, there is gradual deterioration. somebody may be getting short of breath, they re in the hospital, ept et cetera. that sudden death, it could be related. there are possibilities. maybe the viral illness we don t know this, but maybe the viral illness somehow affected the heart in some way. but there are other possibilities too, including whether the sudden death could be caused by a sudden heart rhythm problem or a heart attack or a blood clot. again, we just don t know. and again, it s just so tragic at this point. dr. nguyen also said she does not want to imply there s anything wahl could have done differently to prevent his death. the quarterfinals wahl have been covering have ended with a semifinal that few would have predilgted. we ll have highlights from those matches coming up a little later in the program.