Shackell only arrived at the iPro Stadium during the summer transfer window, but he has immediately played an integral part in their first team.
The former Burnley defender has put in a series of commanding performances, and Shackell says that he is enjoying playing alongside Keogh at the heart of the Derby defence.
Shackell: "Me and Rich clicked really quickly and I think we complement each other strongly and we are showing that on the pitch."— Derby County (@dcfcofficial) December 10, 2015
Derby have built their success this season around the strength of their defensive quality.
The Rams have proved to be a very tough side to score against, and they currently have the best defensive record in England’s second tier.
Derby have conceded just 11 times in their 19 Championship matches this season, and that record has helped them to avoid defeat in 13 of their last 14 matches.
Paul Clement’s side’s backline is set to be tested heavily this weekend, though, as they are facing Brighton & Hove Albion.
The Seagulls are still unbeaten this season, and have one of the most fearsome frontlines in the whole of the Championship.