full nelson, upper hand

Wal-Mart and Target join other frustrated merchants in a project to get the upper hand in the fast-developing market that turns cellphones into payment devices.

upper hand

((the 〜))優勢, 優位

have ［gain, get］ the upper hand of ［on, in］ ...
…に勝つ, …を抑える.

full nelson 雙手卡頸

"half nelson"

nelson
n.
Any of several wrestling holds in which the user places an arm under the opponent's upper arm or armpit and presses the wrist or the palm of the hand against the back of the opponent's neck.

[Perhaps from the name Nelson.]