In what year did the most successful European Ryder Cup captain ever win the U.S. Open?
2010 U.S. Open (golf):  McDowell was the first European to win the U.S. Open in forty years, since Tony Jacklin of England won in 1970, which started a period in which four out of five U.S. Open champions between 2010-14 were European. Tony Jacklin:  He was also the most successful European Ryder Cup captain ever.
i don't know