The European contingent on the PGA Tour are, this week, chasing their fourth successive win on American soil after the success of Justin Rose at the Memorial, Lee Westwood at the St Jude Classic and Graeme McDowell, who sensationally won the US Open at Pebble Beach.
“The Ryder Cup tends to be hard to win as a favourite team at times, so I’m sure there will be no doubt that the US will maybe try and make out that the Europeans are favoured and try and play that card,” said Harrington.
“Certainly when the Europeans have used it for a long number of years.”
After dropping out of automatic qualification for Colin Montgomerie’s team, Harrington said: “I have to work hard to get into the team.
“It’s not an easy team to qualify for, which is always a good sign that you’ve got a strong team.”