He didn'y play at right back until Southampton, the 6th Prem game of the season. Neville was in midfield and Hibbert was not even on the bench so presumbably injured after playing rb early on in the season.
He then played till Norwich at the end of November with neithr Hibbert or Neville available to play at rb.
From then on its basically been whoever has actually been fit has played. Hibbert has barely been seen and Neville has spent most of his time in midfield.
Coleman really has shown enough that the place should be his regardless but his run there only came more than likely because of the unavialability of Neville and Hibbert.
He played at right back against Swansea