Red Bull team principal Christian Horner apologised to Daniel Ricciardo after a calamitous team pit stop cost the Australian driver a near-certain victory at the Monaco Grand Prix. Ricciardo was comfortably in the lead in Sunday's race when he came into the pits for a tyre change, only to find that his pit crew did not have the right tyres ready. After finishing the race in second place behind Lewis Hamilton, Ricciardo was irate at missing out on a fourth career race win, particularly since another team mistake had cost him a shot at victory in Spain two weeks ago, where he finished fourth following a three-stop strategy. "Two races in a row I've been screwed," said Ricciardo, who started the race from pole position and had been electrifyingly quick in practice. "They should have been ready. It hurts." Horner replied: "We as a team owe Daniel a huge apology today as we failed to support him. The delay at his pit stop cost him the lead and despite some excellent driving to get close to Lewis, he couldn't get past." Horner put the mistake down to a "miscommunication" due to the "tightness" of the working space in the team garages.