The 25-year-old Farquhar, who had been picked off waivers by Oakland in early June, was designated for assignment by the Athletics earlier this week after putting up a 10.18 ERA in eight innings of work at Triple-A Sacramento.
The sidearm right-hander only has two big league innings to his name, giving up three runs in three appearances and striking out one as a late-season call up with the Toronto Blue Jays in 2011.
Farquhar will report to the Yankees’ Double-A affiliate, the highest level right-hander has found consistent success. In three seasons at Double-A, the righty has a 3.07 ERA in 152 innings and has struck out 9.6 batters per nine.
The Yankees have transferred Brett Gardner from the 15-day to the 60-day disabled list to make room for Farquhar on the 40-man roster.