Since 1990, the following Masters finals including finalists with names containing only ‘e’ vowels:
1990 Stockholm: Becker–Edberg
1990 Paris: Edberg-Becker
1991 Stockholm: Becker-Edberg
2014 Cincy: Federer–Ferrer
2018 Montreal: Zverev-Federer
2019 Shanghai: Medvedev-Zverev
*2007 Shanghai: Federer-Ferrer (Tennis Masters Cup Final)