Matt Teggart (second from right) of the An Post Chain Reaction  summits Mamore Gap in Donegal on his way to claiming the yellow jersey on stage four of the An Post Rás. Photograph: Morgan Treacy/Inpho

Stage winner on Tuesday, race leader on Wednesday: for Irish rider Matthew Teggart, this An Post Rás has got off to a start he didn’t anticipate. “I(...)