Cameron Bell, Don Cowie and Kevin McNaughton have been drafted in to the Scotland squad ahead of the Euro 2012 qualifying double-header against the Czech Republic and Spain.
Kilmarnock goalkeeper Bell, called up for the first time, replaces Matt Gilks who was sent back to Blackpool after failing to shrug off a dead leg.
Rangers goalkeeper Allan McGregor is to have a scan on a niggling thigh injury but Press Association Sport understands he is not a doubt for Friday's game in Prague.
Ibrox defender Kirk Broadfoot, though, left the Scotland camp earlier in the day with a foot injury which led to Cardiff full-back McNaughton getting the call.
And although Lee McCulloch is suspended for the first game, he is also carrying a hip knock which led to manager Craig Levein calling up Watford midfielder Cowie.
Scotland have four points from their opening matches against Lithuania and Liechtenstein.
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