deef
v.— «Most mid-level tournaments hold their singles qualifying rounds on Saturday and Sunday, which overlap with the doubles finals of the previous week’s event. So if you do well in doubles, you cannot qualify in the next singles contest. “A lot of guys will deef to get to the next qualies,” says Wayne, using shorthand for default and qualifying rounds.» —“Doubles or nothing for Bryans” by Linton Weeks Daily Camera (Boulder, Colorado) Aug. 9, 2006. (source: Double-Tongued Dictionary)