It's not clear when the tennis ball shortage will ease.
How Tennis Is Like Your Supply Chain
When Donuts & Tennis Balls Collide
Vanden High School senior wins third straight SCAC singles tennis title – The Vacaville Reporter
Tallinn WTA250 tennis tournament may face shortage of balls, Sports
Go Green TENNIS EXPRESS BLOG Accessories
Wimbledon: Elina Svitolina ousts No. 1 Iga Swiatek to reach semifinals – Orange County Register
Ryan Trachuk repurposes tennis balls that take hundreds of years to decompose – Daily News
Tennis Ball Buying Guide
The Tennis Ball Shortage is REAL!
Don't know anything about tennis? Here's a handy guide - Chatelaine
There Is A Tennis Ball Shortage Too Now