instant replay

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The recording and immediate playback of part of a live television broadcast, as of a sports play.
• noun The part so recorded and replayed.
• noun Informal Something repeated directly or soon after its original occurrence.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun sports, television A video recording of an action that can be replayed immediately after being recorded.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the immediate rebroadcast of some action (especially sports action) that has been recorded on videotape