Charles River Country Club features a Donald Ross designed golf course that opened in 1921. The members play the course at a par of 72 and a playing distance of 6,657 yards. The course rating is 72.7 with a slope rating of 131. During competitive play, Charles River alters the course to create a par of 70. The 7th and 10th holes, which normally play to a par of 5, are played at a par of 4. Over the years, Charles River has hosted many prestigious amateur and professional tournaments. Charles River was the host for the 2003 USGA Men’s State Team Championship. In 2006, the Massachusetts Open was held at Charles River. Only one player broke par for the tournament and it was winner Geoff Sisk at 1 under. In 2013, Charles River served as a host of the stroke-play qualifying rounds for the 2013 U.S. Amateur Championship.