wrong-foot

Short definition from Wiktionary

Verb

1. 1
   To cause a competitor to move or put weight on the wrong foot, as by making an unexpected move.
2. 2
   To cause a competitor to move or put weight on the wrong foot, as by making an unexpected move: To play the ball in an unexpected direction, forcing (the opponent) to change direction suddenly.
3. 3
   To catch (someone) off balance, off guard; to surprise.
4. 4
   To place (someone) at a tactical disadvantage.
5. 5
   Alternative form of wrong-foot.