The WTA season may be over, but the game’s biggest stars are still headlining stadiums around the world, none bigger than a pair of former No.1s in Maria Sharapova and Ana Ivanovic, who returned to the International Premier Tennis League for a second straight year.

Playing women’s singles and mixed doubles, Sharapova won both of her sets for the Legendari Japan Warriors team, but it wasn’t enough to overcome the Micromax Indian Aces led by top ranked doubles player Sania Mirza and 2011 US Open champion Samantha Stosur, who ultimately won the series, 25-24.

Ivanovic had better fortunes playing for the OBI UAE Royals – with an assist from Kristina Mladenovic. The Serb won a 6-3 women’s singles set against Belinda Bencic, who was playing for the OUE Singapore Slammers, before Mladenovic stepped in for a mixed doubles win with Daniel Nestor over good friend Karolina Pliskova, who partnered Marcelo Melo. The Royals dropped just one set to the Slammers, and took the match, 26-20.

Check out some of the best tweets from Day 1 of the 2015 IPTL season below:

First night of @iptl with one of my biggest fans #Sugarpova. That was fun Kobe! pic.twitter.com/4N6N57tfXl

— Maria Sharapova (@MariaSharapova) December 2, 2015

Readyyy @iptl @SG_Slammers @BelindaBencic pic.twitter.com/LOv8vWyPRk

— Karolina Pliskova (@KaPliskova) December 1, 2015

@KaPliskova @iptl @SG_Slammers @BelindaBencic I'm ready too?!!Let's goooo Royaaaaals ??? @UAERoyals #IPTL2015 pic.twitter.com/ka5qVFpykh

— Kristina Mladenovic (@KikiMladenovic) December 1, 2015

Win #1 of #IPTL2 goes to the @UAERoyals! What a great way to celebrate UAE National Day!

#Tenfie #BreakTheCode pic.twitter.com/kqPeV2tF69

— IPTL (@iptl) December 2, 2015

How cute girls!!!❤️? @KikiMladenovic @AnaIvanovic #UAERoyals @iptl pic.twitter.com/rPHWZduHhO

— AnaIvanovic_FanClub (@AnaIvanovic_Fan) December 2, 2015

Be sure to follow IPTL on Twitter to keep up with all the action around #IPTL2!