Nico Rosberg described his Monaco Grand Prix as "massively disappointing" as his hopes of a fourth straight Monaco Grand Prix victory ended on a damp squib.
Rosberg started from second place on the grid in wet conditions but was unable to keep pace with Red Bull's Daniel Ricciardo, and was ordered by Mercedes to allow Lewis Hamilton through.
Hamilton went on to win the race, while Rosberg was shuffled further down the order, the situation exacerbated by a slow stop.
As rain fell on the final lap, Rosberg was overhauled by Nico Hulkenberg along the pit straight and trailed home in seventh.
"In racing you have good days and bad days,2 he said.
"Today was a bad day for me. I didn't have the pace to fight for the win and we need to understand why. It was possibly a brake issue - but I don't know for sure yet.
"I didn't feel like I could push to the limit at the beginning of the race on the wet tyres. It was a simple decision to accept the request from the team to let Lewis past - even if it hurt very much in that moment.
"I was very far off the pace and Lewis quite clearly had the speed to win for the team. We've always had that rule - if you're ahead and the other guy has a chance to win, you give him that chance.
"From there it just didn't go my way. I had a tricky pit stop and was held in the box because there was traffic in pit lane.
"So the cars were just streaming by and suddenly I was down to sixth. Once you're behind in Monaco that's it - you're stuck.
"At the end, Nico had a lot more rubber left on his Soft tyres and my Ultra Softs were finished, so I lost temperature in the drizzle and lost grip, which let him past too.
"That kind of summed it up, really. I'm massively disappointed with today - I really wanted to win my home race again but it didn't work out."