1. In contact with
2. Playing in opposition to
3. Opposed to
4. In contrast to

In preparation for the time when

1. Abreast; opposite to; facing; towards; in this sense often preceded by over.
2. From an opposite direction so as to strike or come in contact with; in contact with; upon.
3. In opposition to, whether the opposition is of sentiment or of action; on the other side; counter to; in contrariety to; hence, adverse to.