Karolina Pliskova announced Sascha Bajin as her coach for the 2021 season. She split with her former coach Daniel Vallverdu just a few weeks ago.

Pliskova is still in pursuit of her first grand slam. She has been through many over the years but a grand slam has proved elusive.

Her former coaches include Jiri Vanek, Tomas Krupa, David Kotyza, Rennae Stubbs, Conchita Martinez, and Dani Vallverdu.

Sascha Bajin used to be Serena Williams’ hitting partner. He coached Naomi Osaka to her first two grand slams. While he certainly has the skills to help a player win a grand slam, he also has a habit of not working with players for very long.

His player’s list includes Serena Williams, Victoria Azarenka,  Caroline Wozniacki,  Naomi Osaka,  Kristina Mladenovic, and Dayana Yastremska.

How long do you think this partnership will last?  A player who likes to fire coaches is working with a coach who likes to fire players.