The phrase "an emergency replacement for" is correct and usable in written English.
You can use it when referring to a substitute or alternative that is needed urgently or in a critical situation.
Example: "Due to the unexpected absence of our main speaker, we need to find an emergency replacement for the conference."
Alternatives: "a temporary substitute for" or "an urgent stand-in for".
Six weeks ago, Hart was an emergency replacement for the Cardinals after Fernando Viña and Miguel Cairo were injured.
As an emergency replacement for the sacked Michael Laudrup in February 2014, Monk saved Swansea's Premier League and was given the job on a permanent basis.
Marsh, who arrived only on Sunday as an emergency replacement for the injured Shane Watson, finished on 122 not out from 232 balls, and will resume his innings on Thursday in tandem with Steve Smith, who remains unbeaten on 91.
The two met when Mr. Griffin had just taken over as the artistic director of the Drury Lane Theater in Oakbrook Terrace, Ill., and Mr. Murray was called in as an emergency replacement for a music director who had quit.
And that is what Bank One did, also in 1999, when it found an emergency replacement for John B. McCoy, the man who engineered the bank's purchase of First Chicago NBD a year earlier.
The new site for the $2 million crossing, an emergency replacement for bridges that were destroyed in the terrorist attack on Sept. 11, is between Rector and Carlisle Streets, just north of a small community park in the southern part of Battery Park City.
White was in contact with a UFC matchmaker about an emergency replacement foe for Cormier.
UFC officials spent Thursday working to land an emergency replacement fight for Cormier (17-1).
John Carney, 44, an emergency replacement this season for Lawrence Tynes, has been more efficient on field goals and extra points than on his kickoffs, which rarely reach the end zone.
The equation for Newcastle, however, was simple: could their deeds in other areas make up for their injury crisis at tighthead prop where they had been forced to sign Rob O'Donnell from Worcester as an emergency replacement to fulfil the fixture?
