Golf: Who is PGA winner Collin Morikawa’s girlfriend Katherine Zhu? – NEWS.com.au

Katherine Zhu has always been proud of boyfriend Collin Morikawa, long before the 23-year-old won the PGA Championship on Sunday.Last month, fellow golfer Zhu praised Morikawa on social media after he captured the Workday Charity Open and Barracuda Championship titles.
“From playing US Amateur in college to winning two PGA Tour events. So freaking proud of you! I love you @collin_morikawa,” Zhu posted to Instagram.
On Sunday, Zhu — who also caddies for Morikawa — celebrated the golfer’s PGA Ch…

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