Golfer withdraws from planned tournament this weekend.
Arnie's Army travels to Pennsylvania for memorial service.
Ryan Moore clinches victory for United States.
U.S. holds 5-3 lead after one day.
Brings up 2004 event as example.
Europeans have won 8 of 10 last Ryder Cups.
American coming off 2nd-place finish in Tour Championship.
Pair's defining relationship began in Sylvania in 1954.
Golf icon Arnold Palmer dies at 87.
He was one of golf's all-time greats.