Rookie could push Andre Williams off the Giants

Andre Williams Photo: Paul J. BereswillIn the weeks before training camp, we’ll break down each position on the Giants roster to highlight the team’s strengths, weaknesses and the depth-chart battles that will determine who’s around for Week 1:

Running backs

Returning players: Rashad Jennings, Shane Vereen, Andre Williams, Orleans Darkwa, Nikita Whitlock

Key newcomers: Bobby Rainey (free agent), Paul Perkins (draft, fifth round), Will Johnson (free agent)

Assessment: This is mostly the same ‘ol, same ‘ol for the Giants. Their four top rushers of 2015 are back — not exactly a fist-pumping scenario for Giants fans. After all, this team finished 19th in the NFL in rushing offense, averaging 100.6…