From what I've read, C19 is much more contagious than SARS, but not as lethal, except for folks older than 60, and people already suffering from heart problems, lung problems, or diabetes. If you are elderly, this is a very dangerous time to be on an airplane. Mortality rate over 70 is ten percent; over 80 is fifteen percent. 

What happens if one person on the team or support staff gets it and it goes around the clubhouse. Then to another team, or someone gets it and carries it to another city before discovering they are sick. The minors are going to take a big hit!

I Honestly believe that unless you are recovering from Chemo or some other sort of treatment that compromises your immunity system, or you are elderly, there is little to worry about concerning this virus.  Then again, I could be wrong, so take whatever measures you feel are necessary to protect you and your family members.  

I Honestly believe that unless you are recovering from Chemo or some other sort of treatment that compromises your immunity system, or you are elderly, there is little to worry about concerning this virus.  Then again, I could be wrong, so take whatever measures you feel are necessary to protect you and your family members.  

Sorry, there is not little to worry about. So maybe if you fall out of the range of the critical danger zones age or health-wise, you are still in contact with many other people in your daily life who aren't. This is where the greatest spread has been where I am in Hong Kong- family or business gatherings. It is far better to over-react at this critical time, than minimize the danger. It's colleagues, parents, grandparents, anyone in your social circle.  

You did qualify your response, but please, there is no one who has no reason to worry, and to not be protective and proactive.

Above someone mentioned the main problem right now: what if someone on a team catches the virus.

If, say, Albert Pujols catches the virus, then the entire Angels team will be in quarantine. Do you also quarantine the umps from their last series? And the team they played against during their last series? If that all happens, how can the league operate?

You saw what happened in the NBA when a player got the virus. MLB will probably have to postpone the start to their season until testing kits and a plan is in place. Right now there are so many unknowns that it seems almost impossible to start league play in the  near future.

A lot of this is media hype.  The very old folks are the ones succumbing to this virus.  Like 70+ year olds (not 50-60 year olds), but especially people that are immunocompromised. 

Influenza A and B kill over 30,000 Americans a year with over 30 million contracting it from one year to the next.  Of that 490,0000 result in hospitalizations and 35,000 result in deaths.  COVID-19 IS nowhere near that level. 

The CDC put out A LOT of bad data initially about COVID-19.  At first they were claiming 6-8% causalities were possible which is utterly absurd.  The most widely supported number now (compiled by actual medical professionals) is in the range of .75-1% which is bad but not a catastrophe.  In fact it will probably result in far few deaths than the swine flu outbreak a few years back.  

It's kinda like the comparison of the 38,000 car accident fatalities in in USA to one passenger plane crash killing 350 people.  Neither scenario is good obviously, but the media is always going to hype up the plane crash because it's a plane, not typical.  Almost every medical professional I know is just rolling their eyes at this.  This is the first time a corona virus has circulated either, just so everyone is aware.