Shuko Aoyama and Gabriela Dabrowski's first WTA outing culminated in a win in Saturday's Citi Open doubles final.
Svetlana Kuznetsova took on WTA Rising Star Kurumi Nara in the Washington DC singles final on Sunday.
Down a set and 3-0, Nara managed to force a third set but ended up on the short end of the 6-3, 4-6, 6-4 scoreline.
Kuznetsova was elated after collecting her 14th WTA title and first since San Diego in 2010.
Kuznetsova dropped only one set all week en route to becoming the first Top 30 player to capture Washington DC.
Angelique Kerber raced out to a 5-1 lead in Sunday's Bank of the West Classic final against Serena Williams.
Williams maintained her focus, though, and stormed back to win 12 of the next 16 games.
Williams' 7-6(1), 6-3 triumph improved her to 5-1 in her head-to-head with Kerber.
The win was Williams' 13th straight in Stanford, where three of her 61 WTA titles have occurred.
Runner-up Kerber and champion Williams with their hardware during the trophy ceremony.
Not only was Williams awarded $120,000 in prize money, but she was given a stuffed bear.
Williams happily signed autographs for thrilled fans after the final at Stanford University.
Garbiñe Muguruza and Carla Suárez Navarro after securing their first title together in the doubles final.
Doubles runners-up Paula Kania and Katerina Siniakova and champions Suárez Navarro and Muguruza.