Latest news on Sunday race
Ricciardo finishes third, under half a second from second-placed Lewis Hamilton – the closest finish so far this year.
Wear and degradation minimal around the demanding streets of Monte Carlo, without compromising performance.
In the championship, Fernando Alonso is still third on 61 points, half the total of the leader Rosberg.
Valtteri stopped on track following an issue related to the Power Unit.
Christian Horner: "We closed down the gap to the Mercedes at the end and got very close to Lewis."
The team has now taken five consecutive one-two finishes, for just the third time a team has achieved this in F1 history.
Nico Rosberg wins the 2014 Monaco Grand Prix.