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NEWPORT BEACH, CA - JANUARY 27: WTA tennis Ashley Kratzer (USA) returns the ball during the first round of the Oracle Challenger Series tennis tournament played on January 27, 2020 at the Newport Beach Tennis Club in Newport Beach, CA. (Photo by John Cordes/Icon Sportswire via Getty Images)

NEWPORT BEACH, CA - JANUARY 27: WTA tennis Ashley Kratzer (USA) returns the ball during the first round of the Oracle Challenger Series tennis tournament played on January 27, 2020 at the Newport Beach Tennis Club in Newport Beach, CA. (Photo by John Cordes/Icon Sportswire via Getty Images)

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NEW YORK, NY - AUGUST 30: Ashley Kratzer of the United States returns a shot to Tatjana Maria of Germany during their first round Women's Singles match on Day Three of the 2017 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)

NEW YORK, NY - AUGUST 30:  Ashley Kratzer of the United States returns a shot to Tatjana Maria of Germany during their first round Women's Singles match on Day Three of the 2017 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2017 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Al Bello/Getty Images)

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SAN JOSE, CA - AUGUST 01: Ashley Kratzer of the United States returns a shot to Elise Mertens of Belgium during Day 3 of the Mubadala Silicon Valley Classic at Spartan Tennis Complex on August 1, 2018 in San Jose, California. (Photo by Ezra Shaw/Getty Images)

SAN JOSE, CA - AUGUST 01:  Ashley Kratzer of the United States returns a shot to Elise Mertens of Belgium during Day 3 of the Mubadala Silicon Valley Classic at Spartan Tennis Complex on August 1, 2018 in San Jose, California.  (Photo by Ezra Shaw/Getty Images)

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NEW YORK, NY - AUGUST 30: Tatjana Maria of Germany shakes hands with Ashley Kratzer of the United States after their first round Women's Singles match on Day Three of the 2017 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)

NEW YORK, NY - AUGUST 30:  Tatjana Maria of Germany shakes hands with Ashley Kratzer of the United States after their first round Women's Singles match on Day Three of the 2017 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2017 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Al Bello/Getty Images)

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NEWPORT BEACH, CA - JANUARY 27: WTA tennis Ashley Kratzer (USA) waits for a serve during the first round of the Oracle Challenger Series tennis tournament played on January 27, 2020 at the Newport Beach Tennis Club in Newport Beach, CA. (Photo by John Cordes/Icon Sportswire via Getty Images)

NEWPORT BEACH, CA - JANUARY 27: WTA tennis Ashley Kratzer (USA) waits for a serve during the first round of the Oracle Challenger Series tennis tournament played on January 27, 2020 at the Newport Beach Tennis Club in Newport Beach, CA. (Photo by John Cordes/Icon Sportswire via Getty Images)