On paper Serena Williams is favourite as she chases a 22nd Grand Slam singles title to equal Steffi Graf's open era record.

Victory tomorrow morning will edged the world number one closer to Margaret Court's all time record of 24.

But in reality, Williams is struggling.

The 34 year old appeared hampered by an adductor muscle strain in her win over Kiki Bertens, and the cool heavy conditions have negated the impact of her powerful serve.

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She struggled against Yulia Putinseva as well and Williams looks like she is liming to the finish line.

Garbine Muguruza has been the more impressive of the two finalists and having made her first Grand Slam final last year, losing to Williams, the nerves won't be quite the same for the 22 year old Spaniard. Muguruza has belief and can match the power of Williams.

Muguruza serves big, has a huge forehand and is athletic. She appears in prime shape and I consider her a favourite to break through and win the final.

Serena Williams was upset by Angelique Kerber in the final of the Australian Open in January, and by Roberta Vinci in the semi-finals of last year's US Open as she chased a calendar year Grand Slam.

She is beatable in big matches, despite her phenomenal record, Muguruza can win in straight sets.

Matt Brown is in Paris thanks to Emirates Airline