It's normal for your fingers to go numb while scrolling on your phone occasionally, but if this is becoming a daily nuisance, you may be developing cubital tunnel syndrome.
And the easy way to test this is simply to sit down. You can do it standing, with your elbow at a 90-degree bend, and both of them out in front of you, you're going to compare supination ...
The news coming from Tampa Bay, Fla., about the possible elbow issue that New York Yankees ace Gerrit Cole is experiencing is the kind of nightmare nobody wants ...