The young Dubliner , a Junior Open champion in 2014 , missed a 20 - footer for birdie there , however .
McElroy cruelly holed from 10 - feet for a two - hole win .
The young Dubliner , a Junior Open champion in 2014 , missed a 20 - footer for birdie there , however , and McElroy cruelly holed from 10 - feet for a two - hole win .