Tennis balls are resource-intensive to produce. Tennis players use a can of balls for one or two sessions and throw them away.  Neither the balls nor the containers are recycled most of the time.

At major tournaments, balls are changed every seven or nine games. A grand slam tournament typically goes through 50,000 to 60,000 balls in two weeks.

The ball containers are not recyclable. A recyclable container will not hold pressure as well as a non-recyclable one. Balls are not recyclable either. Once they are dumped in a landfill, tennis balls are likely to sit there for many years because they are not biodegradable.

Even good tennis players have awful strokes. Novak Djokovic became one of the all-time greats with an awful overhead smash.

Everything about Daniil Medvedev is ugly, yet he was able to win a grand slam. Elena Dementieva reached world number three with a pretty amateur serve.

Here is a list of the most awful strokes in tennis.

Awful Everything

Daniil Medvedev

Awful serves

Federico  Delbonis

Richard Gasquet

Paolo Lorenzi

Jelena Ostapenko

Sara Errani (and the grunts)

Katerina Siniakova

Jensen Brooksby

Elena Dementieva (deserves to be in the Hall of Fame for her serve)

Alison Riske

Sofia Kenin (no-look toss)

Awful Forehands

Earnests Gulbis

Adrian Mannarino

Lorenzo Musetti

Karen Khachanov

Richard Gasquet

Jack Sock

Awful Backhands

Matteo Berrettini (not ugly, but very weak)

Cameron Norrie

Jim Courier

Andy Roddick

Awful Overheads

Novak Djokovic

Awful Slice

Fabio Fognini