Big Sascha is no longer part of Team Serena.



Serena Williams' eight-year working relationship with hitting partner Sascha Bajin has apparently come to an end.



The man Serena affectionately calls "Big Sascha" referenced the split in a tweet today thanking the world No. 1 for their time together.



Bajin is now working with Williams' friend, former world No. 1 Victoria Azarenka.





Thank you @serenawilliams you know @vika7 and me won't be having any fun. Lol! Thank you for 8 unforgettable years, what a ride it was.... — sascha Bajin (@BigSascha) March 4, 2015





Bajin, who was recovering from injury, did not make the trip to Melbourne where the top-seeded Williams captured her 19th Grand Slam title at the Australian Open.

Going to sleep here guys... Hope you all have a good one. Miss you @serenawilliams 😢 pic.twitter.com/0Jwl0ISLYX — sascha Bajin (@BigSascha) January 18, 2015





Photo credit: Sascha Bajin @BigSascha They could run into each other this month in Indian Wells as Serena is scheduled to return to the tournament for the first time since 2001.