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1st time, 1st name, 1st letter

In Open-era, this is the 1⃣st time in Wimbledon Women’s singles finalists’ first names start with the same letter (S)! 
1992 Australian Open: Monica Seles – Mary Joe Fernandez
1997 Australian Open:  Martina Hingis – Mary Pierce
2018 Roland Garros:  Simona Halep – Sloane Stephens
1991 US Open: Monica Seles – Martina Navrátilová
2011 US Open:  Samantha Stosur – Serena Williams