On May 20, 2011 — The Chicago Cubs make their first visit to Fenway Park since the 1918 World Series, but the Red Sox prove to be poor hosts, whacking them, 15 – 5. The Cubs commit 4 errors and give up 19 hits, while the Sox take advantage of the Green Monster to launch 6 doubles and a pair of homers in its direction. Adrian Gonzalez has 4 hits and 4 RBI in the Sox’s 7th straight win.

Source:
Baseball Reference May 20