SID Nelson played in the centre of defence for Chesterfield but couldn't help them from going down to a 3-1 defeat at home to Lincoln at the weekend.
The Spireites are in real danger of suffering a second successive relegation as they lie 23rd in League Two, six points off safety. Nelson was also involved in Newport's relegation battle last season before their remarkable late escape.
Kris Twardek came off the bench in the 77th minute of Carlisle's 1-1 draw at Exeter. James Brown was an unused substitute.
The Cumbrians are 10th in League Two, two points off the play-offs.
In League One, Jimmy Abdou played in midfield for AFC Wimbledon who boosted their survival hopes with a 2-1 win at home to Oxford. The Dons are three points above the drop zone.
In National League South, Jamie Philpot came on with 14 minutes left as Welling United defeated East Thurrock 1-0 to stay in eighth, level on points with Braintree Town who are in the last play-off place.