Former World No.1 Garbine Muguruza wants to end a “roller-coaster” season with “a different feeling” after winning her opening match at the Pan Pacific Open on Wednesday. 

The Spaniard beat Greek qualifier Despina Papamichail 6-4, 6-2 to move into the quarter-finals in Tokyo and gain “a little bit more confidence” in a poor year for the two-time Grand Slam champion.