During a year in which 24 different players have claimed titles in 29 LPGA events, the 22-year-old native of Thailand has been the closest to a consistent force, winning three times and posting 15 top-10 finishes in 25 starts.
The odds of the two balls hitting are pretty slim, so to see this sight added an interesting twist to the dramatic charge that Schauffele was putting together.
Koepka entered the tournament ranked third in the world, but with a victory or a solo second without Thomas winning, he can jump Dustin Johnson and Justin Rose to become No.1.