No strangers to one another, Earnhardt Jr. and Ives used to be in the same fantasy football league. Now, Ives -- a former team engineer for Jimmie Johnson -- is tasked with filling the supersized shoes of Junior's pit boss from the past four seasons, Steve Letarte.
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Carl Edwards-Darian Grubb
Talk about ironic. Grubb was the crew chief for Tony Stewart in 2011 when "Smoke" edged Edwards in the closest championship battle in NASCAR history. Now, after three seasons with Denny Hamlin, Grubb will call the shots for Edwards' new team at Joe Gibbs Racing.
Trevor Bayne-Bob Osborne
Finally set to embark on full-time run in NASCAR's top series, Bayne will get to do so with Osborne, a veteran crew chief who last worked with Carl Edwards in mid-2012 -- a season after nearly leading Edwards to the Sprint Cup title.
Kyle Busch-Adam Stevens
Busch and Stevens know each other well, having won 19 races together in the Nationwide Series over the past two years. But will they be able to transfer their magic over to the Sprint Cup side?
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Kurt Busch-Tony Gibson
Busch and Gibson got a head start on 2015 by working together in the final three races of last season. The result? An immediate uptick in performance for Busch, who finished out the year with finishes of eighth, seventh and 11th.