Right to the questions...
Have a question or comment for Jon? Email him at jon_wertheim@yahoo.com or tweet him @jon_wertheim.
I was curious what you think about the new Davis Cup format? Does this breathe new life into Davis Cup or does it hasten its demise?
—Matt D., New York
• Spare a thought, first, for Frances Tiafoe. The 20-year-old American won his first title, beating Juan Martin del Potro en route to taking Delray. Great result. Great story. Great kid….