on course

(idiomatic) Proceeding smoothly as planned.

Example: 2011 October 23, Phil McNulty, “Man Utd 1 - 6 Man City”[1], BBC Sport:
  United were reduced to 10 men when Jonny Evans was sent off early in the second half but City's superiority was such that they looked on course for a landmark victory from the moment they took the lead.