Sebastian Vettel admits that he had no option but to let Red Bull team-mate Daniel Ricciardo through in the closing stages of the Bahrain Grand Prix.

The Australian appeared to have the better RB10 for much of the afternoon, making light of his 13th spot in the grid to work his way into the points. However, following a late-race reshuffle brought about by the timing of tyre stops and the advent of the safety car, he found himself behind Vettel for the ten-lap sprint to the flag.

Undaunted by the German's status, Ricciardo wasted little time in making his move, with Vettel conceding that there was nothing he could do to defend his position. Ricciardo had characterised the early part of the 57-lap event by complaining that he was being held up by Vettel, who bucked the trend by starting on Pirelli's medium-compound tyre - a call which resulted in the four-time champion being asked to make way.

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"It was very straightforward - I tried to defend, but he was already side-by-side [with me], so there wasn't much I could do," Vettel said of the final move, "[When you're racing] against a team-mate, you don't try to do something stupid."

Vettel had earlier reported that his DRS was proving problematic and, having been passed by Ricciardo in the closing stages, claimed that his car was struggling for pace. Despite that, he would go on to finish sixth on the road, harrying Force India's Nico Hulkenberg over the final few lap.

"It was a busy race at the end, especially because of the safety car, and it's a shame I couldn't get further up because I think there was a little more to get," Vettel said, "I couldn't really get to that as my car seemed to be very slow down the straights. We need to find the reason for it, as we weren't really good enough today."